c ccc ccccccccc ccc
kkkkkkkk fffffffffffffffffffffff o ffffffffffff o ffffffffffff
h hhhh hhhhhhh
    kkkkkkkkkk
        PPPPPPPPPP tttttt o nD c cccccc cccccccc cccc c ccccccc ccccc
    kkk

    kkkkkkk
        kkkkkkkk vvv o fffffffbvvvvvvvvvvvvb
            h hhhhhhhhhhh hhhhhh
            dddDdddddddddd o ddddddddddddD
        kkk

        kkkkkkkk vvvvvvvv o fffffffffffffbvvvb
            h hhhhhh hhhhhh
            vvvvvvvv o dddDddddddddddD
        kkk

        kkkkkkkk vvv o fffffffffffffbvvvD vvvvvvvvb
            h hhhhhh hhhhhh
            dddDdddddddddd o ddddddddD
        kkk
    kkk
kkk
