Why does this prison GroupManager config not work?

groups:
  a:
    default: true
    prefix: '&b[&6&lA&b]'
    permissions:
    - essentials.warps.maze
    - mcdocs.command.ranks
    - essentials.balance
    - serversigns.use
    - essentials.signs.use.free
    - essentials.signs.use.disposal
    - essentials.signs.use.buy
    - essentials.signs.use.sell
    - essentials.warps.spawn
    - essentials.suicide
    - essentials.rules
    - essentials.mail.msg
    - essentials.mail.send
    - essentials.mail
    - essentials.ignore
    - essentials.help
    - essentials.signs.use.weather
    - essentials.signs.use.time
    - plotme.limit.1
    - essentials.spawn
    - essentials.warps.plots
    - plotme.use.remove
    - plotme.use.add
    - plotme.use.undeny
    - plotme.use.deny
    - plotme.use.dispose
    - plotme.use.list
    - plotme.use.clear
    - plotme.use.biome
    - plotme.use.comments
    - plotme.use.comment
    - plotme.use.info
    - plotme.use.auto
    - plotme.use.home
    - plotme.use.claim
    - essentials.warp.list
    - essentials.warp
    - essentials.warps.a
    - rankup.rankup
  b:
    prefix: '&b[&7&lB&b]'
    inheritance:
    - a
    permissions:
    - essentials.warps.b
  c:
    prefix: '&b[&8&lC&b]'
    inheritance:
    - b
    permissions:
    - essentials.warps.c
  d:
    prefix: '&b[&9&lD&b]'
    inheritance:
    - c
    permissions:
    - essentials.warps.d
  e:
    prefix: '&b[&1&lE&b]'
    inheritance:
    - d
    permissions:
    - essentials.warps.e
  f:
    prefix: '&b[&2&lF&b]'
    inheritance:
    - e
    permissions:
    - essentials.warps.f
  g:
    prefix: '&b[&3&lG&b]'
    inheritance:
    - f
    permissions:
    - essentials.warps.g
  h:
    prefix: '&b[&4&lH&b]'
    inheritance:
    - g
    permissions:
    - essentials.warps.h
  i:
    prefix: '&b[&5&lI&b]'
    inheritance:
    - h
    permissions:
    - essentials.warps.i
  j:
    prefix: '&b[&6&lJ&b]'
    inheritance:
    - i
    permissions:
    - essentials.warps.j
  k:
    prefix: '&b[&7&lK&b]'
    inheritance:
    - j
    permissions:
    - essentials.warps.k
  l:
    prefix: '&b[&8&lL&b]'
    inheritance:
    - k
    permissions:
    - essentials.warps.l
  m:
    prefix: '&b[&9&lM&b]'
    inheritance:
    - l
    permissions:
    - essentials.warps.m
  n:
    prefix: '&b[&1&lN&b]'
    inheritance:
    - m
    permissions:
    - essentials.warps.n
  o:
    prefix: '&b[&2&lO&b]'
    inheritance:
    - n
    permissions:
    - essentials.warps.o
  p:
    prefix: '&b[&3&lP&b]'
    inheritance:
    - o
    permissions:
    - essentials.warps.p
  q:
    prefix: '&b[&4&lQ&b]'
    inheritance:
    - p
    permissions:
    - essentials.warps.q
  r:
    prefix: '&b[&5&lR&b]'
    inheritance:
    - q
    permissions:
    - essentials.warps.r
  s:
    prefix: '&b[&6&lS&b]'
    inheritance:
    - r
    permissions:
    - essentials.warps.s
  y:
    prefix: '&b[&3&lY&b]'
    inheritance:
    - x
  t:
    prefix: '&b[&7&lT&b]'
    inheritance:
    - s
  u:
    prefix: '&b[&8&lU&b]'
    inheritance:
    - t
  v:
    prefix: '&b[&9&lV&b]'
    inheritance:
    - u
  w:
    prefix: '&b[&1&lW&b]'
    inheritance:
    - v
  x:
    prefix: '&b[&2&lX&b]'
    inheritance:
    - w
  z:
    prefix: '&b[&4&lZ&b]'
    inheritance:
    - y
  free:
    prefix: '&b[&5&lFree&b]'
    permissions:
    - serversigns.use.prestige
    - essentials.warps.prestige
    inheritance:
    - z
 Owner:
    default: false
    permissions:
    - '*'
    - -vanish.effects.*
    - +vanish.effects.toggle.all
    inheritance:
    - admin
    info:
      prefix: ''
      build: true
      suffix: '&8[&c&kiii&b&lOwner&c&kiii&8]'
  b:
    prefix: '&b[&7&lB&b]'
    inheritance:
    - a
    permissions:
    - essentials.warps.b
  c:
    prefix: '&b[&8&lC&b]'
    inheritance:
    - b
    permissions:
    - essentials.warps.c
  d:
    prefix: '&b[&9&lD&b]'
    inheritance:
    - c
    permissions:
    - essentials.warps.d
  e:
    prefix: '&b[&1&lE&b]'
    inheritance:
    - d
    permissions:
    - essentials.warps.e
  f:
    prefix: '&b[&2&lF&b]'
    inheritance:
    - e
    permissions:
    - essentials.warps.f
  g:
    prefix: '&b[&3&lG&b]'
    inheritance:
    - f
    permissions:
    - essentials.warps.g
  h:
    prefix: '&b[&4&lH&b]'
    inheritance:
    - g
    permissions:
    - essentials.warps.h
  i:
    prefix: '&b[&5&lI&b]'
    inheritance:
    - h
    permissions:
    - essentials.warps.i
  j:
    prefix: '&b[&6&lJ&b]'
    inheritance:
    - i
    permissions:
    - essentials.warps.j
  k:
    prefix: '&b[&7&lK&b]'
    inheritance:
    - j
    permissions:
    - essentials.warps.k
  l:
    prefix: '&b[&8&lL&b]'
    inheritance:
    - k
    permissions:
    - essentials.warps.l
  m:
    prefix: '&b[&9&lM&b]'
    inheritance:
    - l
    permissions:
    - essentials.warps.m
  n:
    prefix: '&b[&1&lN&b]'
    inheritance:
    - m
    permissions:
    - essentials.warps.n
  o:
    prefix: '&b[&2&lO&b]'
    inheritance:
    - n
    permissions:
    - essentials.warps.o
  p:
    prefix: '&b[&3&lP&b]'
    inheritance:
    - o
    permissions:
    - essentials.warps.p
  q:
    prefix: '&b[&4&lQ&b]'
    inheritance:
    - p
    permissions:
    - essentials.warps.q
  r:
    prefix: '&b[&5&lR&b]'
    inheritance:
    - q
    permissions:
    - essentials.warps.r
  s:
    prefix: '&b[&6&lS&b]'
    inheritance:
    - r
    permissions:
    - essentials.warps.s
  y:
    prefix: '&b[&3&lY&b]'
    inheritance:
    - x
  t:
    prefix: '&b[&7&lT&b]'
    inheritance:
    - s
  u:
    prefix: '&b[&8&lU&b]'
    inheritance:
    - t
  v:
    prefix: '&b[&9&lV&b]'
    inheritance:
    - u
  w:
    prefix: '&b[&1&lW&b]'
    inheritance:
    - v
  x:
    prefix: '&b[&2&lX&b]'
    inheritance:
    - w
  z:
    prefix: '&b[&4&lZ&b]'
    inheritance:
    - y
  free:
    prefix: '&b[&5&lFree&b]'
    permissions:
    - serversigns.use.prestige
    - essentials.warps.prestige
    inheritance:
    - z

  Moderator:
    default: false
    permissions: []
    inheritance:
    - builder
    - g:groupmanager_moderator
    - g:bukkit_moderator
    - g:essentials_moderator
    - g:towny_moderator
    - g:vanish_moderator
    info:
      prefix: ''
      build: true
      suffix: '&8[&5Moderator&8]'
  b:
    prefix: '&b[&7&lB&b]'
    inheritance:
    - a
    permissions:
    - essentials.warps.b
  c:
    prefix: '&b[&8&lC&b]'
    inheritance:
    - b
    permissions:
    - essentials.warps.c
  d:
    prefix: '&b[&9&lD&b]'
    inheritance:
    - c
    permissions:
    - essentials.warps.d
  e:
    prefix: '&b[&1&lE&b]'
    inheritance:
    - d
    permissions:
    - essentials.warps.e
  f:
    prefix: '&b[&2&lF&b]'
    inheritance:
    - e
    permissions:
    - essentials.warps.f
  g:
    prefix: '&b[&3&lG&b]'
    inheritance:
    - f
    permissions:
    - essentials.warps.g
  h:
    prefix: '&b[&4&lH&b]'
    inheritance:
    - g
    permissions:
    - essentials.warps.h
  i:
    prefix: '&b[&5&lI&b]'
    inheritance:
    - h
    permissions:
    - essentials.warps.i
  j:
    prefix: '&b[&6&lJ&b]'
    inheritance:
    - i
    permissions:
    - essentials.warps.j
  k:
    prefix: '&b[&7&lK&b]'
    inheritance:
    - j
    permissions:
    - essentials.warps.k
  l:
    prefix: '&b[&8&lL&b]'
    inheritance:
    - k
    permissions:
    - essentials.warps.l
  m:
    prefix: '&b[&9&lM&b]'
    inheritance:
    - l
    permissions:
    - essentials.warps.m
  n:
    prefix: '&b[&1&lN&b]'
    inheritance:
    - m
    permissions:
    - essentials.warps.n
  o:
    prefix: '&b[&2&lO&b]'
    inheritance:
    - n
    permissions:
    - essentials.warps.o
  p:
    prefix: '&b[&3&lP&b]'
    inheritance:
    - o
    permissions:
    - essentials.warps.p
  q:
    prefix: '&b[&4&lQ&b]'
    inheritance:
    - p
    permissions:
    - essentials.warps.q
  r:
    prefix: '&b[&5&lR&b]'
    inheritance:
    - q
    permissions:
    - essentials.warps.r
  s:
    prefix: '&b[&6&lS&b]'
    inheritance:
    - r
    permissions:
    - essentials.warps.s
  y:
    prefix: '&b[&3&lY&b]'
    inheritance:
    - x
  t:
    prefix: '&b[&7&lT&b]'
    inheritance:
    - s
  u:
    prefix: '&b[&8&lU&b]'
    inheritance:
    - t
  v:
    prefix: '&b[&9&lV&b]'
    inheritance:
    - u
  w:
    prefix: '&b[&1&lW&b]'
    inheritance:
    - v
  x:
    prefix: '&b[&2&lX&b]'
    inheritance:
    - w
  z:
    prefix: '&b[&4&lZ&b]'
    inheritance:
    - y
  free:
    prefix: '&b[&5&lFree&b]'
    permissions:
    - serversigns.use.prestige
    - essentials.warps.prestige
    inheritance:
    - z

	Admin:
    default: false
    permissions: []
    inheritance:
    - moderator
    - g:groupmanager_admin
    - g:bukkit_admin
    - g:essentials_admin
    - g:towny_admin
    - g:vanish_admin
    info:
      prefix: ''
      build: true
      suffix: '&8[&c&lAdmin&8]'
  b:
    prefix: '&b[&7&lB&b]'
    inheritance:
    - a
    permissions:
    - essentials.warps.b
  c:
    prefix: '&b[&8&lC&b]'
    inheritance:
    - b
    permissions:
    - essentials.warps.c
  d:
    prefix: '&b[&9&lD&b]'
    inheritance:
    - c
    permissions:
    - essentials.warps.d
  e:
    prefix: '&b[&1&lE&b]'
    inheritance:
    - d
    permissions:
    - essentials.warps.e
  f:
    prefix: '&b[&2&lF&b]'
    inheritance:
    - e
    permissions:
    - essentials.warps.f
  g:
    prefix: '&b[&3&lG&b]'
    inheritance:
    - f
    permissions:
    - essentials.warps.g
  h:
    prefix: '&b[&4&lH&b]'
    inheritance:
    - g
    permissions:
    - essentials.warps.h
  i:
    prefix: '&b[&5&lI&b]'
    inheritance:
    - h
    permissions:
    - essentials.warps.i
  j:
    prefix: '&b[&6&lJ&b]'
    inheritance:
    - i
    permissions:
    - essentials.warps.j
  k:
    prefix: '&b[&7&lK&b]'
    inheritance:
    - j
    permissions:
    - essentials.warps.k
  l:
    prefix: '&b[&8&lL&b]'
    inheritance:
    - k
    permissions:
    - essentials.warps.l
  m:
    prefix: '&b[&9&lM&b]'
    inheritance:
    - l
    permissions:
    - essentials.warps.m
  n:
    prefix: '&b[&1&lN&b]'
    inheritance:
    - m
    permissions:
    - essentials.warps.n
  o:
    prefix: '&b[&2&lO&b]'
    inheritance:
    - n
    permissions:
    - essentials.warps.o
  p:
    prefix: '&b[&3&lP&b]'
    inheritance:
    - o
    permissions:
    - essentials.warps.p
  q:
    prefix: '&b[&4&lQ&b]'
    inheritance:
    - p
    permissions:
    - essentials.warps.q
  r:
    prefix: '&b[&5&lR&b]'
    inheritance:
    - q
    permissions:
    - essentials.warps.r
  s:
    prefix: '&b[&6&lS&b]'
    inheritance:
    - r
    permissions:
    - essentials.warps.s
  y:
    prefix: '&b[&3&lY&b]'
    inheritance:
    - x
  t:
    prefix: '&b[&7&lT&b]'
    inheritance:
    - s
  u:
    prefix: '&b[&8&lU&b]'
    inheritance:
    - t
  v:
    prefix: '&b[&9&lV&b]'
    inheritance:
    - u
  w:
    prefix: '&b[&1&lW&b]'
    inheritance:
    - v
  x:
    prefix: '&b[&2&lX&b]'
    inheritance:
    - w
  z:
    prefix: '&b[&4&lZ&b]'
    inheritance:
    - y
  free:
    prefix: '&b[&5&lFree&b]'
    permissions:
    - serversigns.use.prestige
    - essentials.warps.prestige
    inheritance:
    - z
	 Builder:
    default: false
    permissions: []
    inheritance:
    - default
    - g:essentials_builder
    - g:towny_builder
    info:
      prefix: ''
      build: true
      suffix: '&8[&2Builder&8]'
  b:
    prefix: '&b[&7&lB&b]'
    inheritance:
    - a
    permissions:
    - essentials.warps.b
  c:
    prefix: '&b[&8&lC&b]'
    inheritance:
    - b
    permissions:
    - essentials.warps.c
  d:
    prefix: '&b[&9&lD&b]'
    inheritance:
    - c
    permissions:
    - essentials.warps.d
  e:
    prefix: '&b[&1&lE&b]'
    inheritance:
    - d
    permissions:
    - essentials.warps.e
  f:
    prefix: '&b[&2&lF&b]'
    inheritance:
    - e
    permissions:
    - essentials.warps.f
  g:
    prefix: '&b[&3&lG&b]'
    inheritance:
    - f
    permissions:
    - essentials.warps.g
  h:
    prefix: '&b[&4&lH&b]'
    inheritance:
    - g
    permissions:
    - essentials.warps.h
  i:
    prefix: '&b[&5&lI&b]'
    inheritance:
    - h
    permissions:
    - essentials.warps.i
  j:
    prefix: '&b[&6&lJ&b]'
    inheritance:
    - i
    permissions:
    - essentials.warps.j
  k:
    prefix: '&b[&7&lK&b]'
    inheritance:
    - j
    permissions:
    - essentials.warps.k
  l:
    prefix: '&b[&8&lL&b]'
    inheritance:
    - k
    permissions:
    - essentials.warps.l
  m:
    prefix: '&b[&9&lM&b]'
    inheritance:
    - l
    permissions:
    - essentials.warps.m
  n:
    prefix: '&b[&1&lN&b]'
    inheritance:
    - m
    permissions:
    - essentials.warps.n
  o:
    prefix: '&b[&2&lO&b]'
    inheritance:
    - n
    permissions:
    - essentials.warps.o
  p:
    prefix: '&b[&3&lP&b]'
    inheritance:
    - o
    permissions:
    - essentials.warps.p
  q:
    prefix: '&b[&4&lQ&b]'
    inheritance:
    - p
    permissions:
    - essentials.warps.q
  r:
    prefix: '&b[&5&lR&b]'
    inheritance:
    - q
    permissions:
    - essentials.warps.r
  s:
    prefix: '&b[&6&lS&b]'
    inheritance:
    - r
    permissions:
    - essentials.warps.s
  y:
    prefix: '&b[&3&lY&b]'
    inheritance:
    - x
  t:
    prefix: '&b[&7&lT&b]'
    inheritance:
    - s
  u:
    prefix: '&b[&8&lU&b]'
    inheritance:
    - t
  v:
    prefix: '&b[&9&lV&b]'
    inheritance:
    - u
  w:
    prefix: '&b[&1&lW&b]'
    inheritance:
    - v
  x:
    prefix: '&b[&2&lX&b]'
    inheritance:
    - w
  z:
    prefix: '&b[&4&lZ&b]'
    inheritance:
    - y
  free:
    prefix: '&b[&5&lFree&b]'
    permissions:
    - serversigns.use.prestige
    - essentials.warps.prestige
    inheritance:
    - z