(B)0                   \|/                            lwk lq lqk lqk k l
                  --`--                           xxx tq xlj xlj mwj
                   /|\                           mj m mq jmq jmq  j
                   ***                     lqk k l lqk w lqk lwk lwk lqk lqk
                  **f**                    x   tqu xlj x mqk  x  xxx tqu mqk
                 f*****f                   mqj j m jmq v mqj  m mj m j m mqj
                **f***f**
               **********f                    `                         `
              **f***f***f**                 `   `                     `   `
             f*************f              `       `                 `       `
            ******f***f******                                                
           f***f*********f***f         lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
          **f*******f*******f**        mqqwqwqqqwqqqqqqqqqqqqqqqqqqqqqwqqqwqwqqj
         f*****f*********f*****f          x x x x qqqqqqqqqOqqqqqqqqq x x x x
        ****f*****f***f*****f****         x x x tqqqqqqqqqqqqqqqqqqqqqu x x x
       f*f*****f*********f*****f*f        x x x x                     x x x x
      ******f*****f***f*****f******       x x O x      a a   a        x O x x
     f***f*****f****f****f*****f***f      x x O x   a  aaaa  aa a  a  x O x x
    **f***f***f***f***f***f***f***f**     x x x x  aaa aaaaaaaaaa aa  x x x x
   f*****f*****f*********f*****f*****f    x x x x lqqq qqqqqqqqqq qqk x x x x
  ****f*****f*****f***f*****f*****f****   x x x x xl     qqqqqq     u x x x x
 f**f****f*****f****f****f*****f****f**f  mqvqqqj mv qqq qqqqqq qqq j mqqqvqj
         #6          MIS