parity is +1 -1 -1 +1 -1 -1 +1 -1 +0 -1 -1 +1, -3 leaning solids in corners

1-
x x o o o
 o o x x
  o 8 x
   x x
    o

1-1
o x o o o
 x o x x
  o 8 x
   x x
    o

1-2-
o x o x o
 x o o x
  o 8 x
   x x
    o

1-2-1-
o x o x o
 x o x x
  o 8 o
   x x
    o