               "     b b        ",
               "     bb         ",
               " bbbbbb         ",
               "bbbbbbb         ",
               "   bbb          ",
               "   bbbbbbbb     ",
               "  bbbbbbbbbb    ",
               "  bbbbbbbbbbb   ",
               "  bbbbbbbbbb b  ",
               "  bbb    bbb  b ",
               "  b b    b  b  b",
               "  b b    b  b   ",
               "  b b    b  b   ",
               "  b b    b  b   ",
               "                "}
