888888888     FFFFFFFFFFFFFFFFFFFFFF
                88:::::::::88   F::::::::::::::::::::F
              88:::::::::::::88 F::::::::::::::::::::F
             8::::::88888::::::8FF::::::FFFFFFFFF::::F
             8:::::8     8:::::8  F:::::F       FFFFFF
             8:::::8     8:::::8  F:::::F
              8:::::88888:::::8   F::::::FFFFFFFFFF
               8:::::::::::::8    F:::::::::::::::F
              8:::::88888:::::8   F:::::::::::::::F
             8:::::8     8:::::8  F::::::FFFFFFFFFF
             8:::::8     8:::::8  F:::::F
             8:::::8     8:::::8  F:::::F
             8::::::88888::::::8FF:::::::FF
              88:::::::::::::88 F::::::::FF
                88:::::::::88   F::::::::FF
                  888888888     FFFFFFFFFFF