c ccc ccccccccc ccc
kkkkkkkk fffffffffffffffffff
    kkkkkkkkkk
        PPPPPPPPPPP o bn nd n nb
    kkk
    
    kkkkkkk
        kkkkkkkk vvv o kkkkfffffffffffbvvvD vvvb
            kkk BBBBbdddb
                dddDddddddddddd o dddD
            kkkkk dd
                BBBBBbSsssssssssss ssss ss sssssssss ssssssss sssssssssSb
            kkk
        kkk

        kkkkkkkk v o kkkkfffffffffffbvvvb
            v o dddDdddddddddddD
        kkk
    kkk
kkk
