[layer]

?
?
?
?
?
?
?
???^

[layer]

?NNNNN
?N...N
?N...N
?N...N
?N...N
?N...N
?NNNNN

[layer]

?N???N
?
?
?
?
?
?N???N


[layer]

rKNNNN
rKR..N
rKR..N
rKR..N
rKR..N
rKR..N
rKNNNN

[layer]

??rKNN
??rKRN
??rKRN
??rKRN
??rKRN
??rKRN
??rKNN

[layer]

????r
????r
????r
????r
????r
????r
????r

