try this one

groups:
  Default:
    default: true
    prefix: '&2[Player]&7'
    suffix: '&7'
    permissions:
    - essentials.afk
    - essentials.build
    - essentials.help
    - essentials.sethome
    - essentials.home
    - essentials.spawn
    - essentials.tpa
    - essentials.tpaccept
    - essentials.tpdeny
    - essentials.motd
    - essentials.msg
    - essentials.rules
  Moderator:
    inheritance:
    - Default
    prefix: '&b[Moderator]&7'
    suffix: '&7'
    permissions:
    - essentials.repair
    - essentials.heal
    - essentials.item
    - essentials.give
    - essentials.fly
    - essentials.kick
    - essentials.mute
    - essentials.tjail
    - essentials.jail
    - essentials.tempban
    - essentials.vanish
  Admin:
    inheritance:
    - Moderator
    prefix: '&4[&cAdmin&4]&e'
    suffix: '&7'
    permissions:
    - essentials.gamemode
    - essentials.ban
    - essentials.unban
    - essentials.ipban
    - essentials.unipban
    - essentials.pardon
    - essentials.enchant
  Co-Owner:
    inheritance:
    - Admin
    prefix: '&4[Owner]'
    suffix: '&b'
    permissions:
    - '*'
  Owner:
    inheritance:
    - Co-Owner
    prefix: '&4[Owner]'
    suffix: '&b'
    permissions:
    - '*'