c ccc ccccccccc ccc
kkkkkkkk ffffffffffffffffffffffffff
    kkkkkkkkkk
        PP
        PP ttttttD
        PP tttttt o nD
        PP bnDnb ttttttD
        PP bnDnb tttttt o nD
        PP bnDnb tttttt bBBBBBBBBBBBBBBb o nD
    kkk
kkk
