net 9 11
        ##
      ######
        ##
  ##          ##
######  ##  ######
  ##          ##
        ##
      ##  ##  ##
  ##    ##
######
  ##
                                badadbdcbb
                                fj      fa
                                fk      fb
                                fl      fc
                        bafjfkfl##########fcfbfabb
                        el      ##      ##      ec
                        ek      ##      ##      eb
                        ej      ##      ##      ea
                        aafgfhfi##########fdfeffab
                                fi      fd
                                fh      fe
                                fg      ff
        baelekejaa              aacacbccab              abeaebecbb
        ij      ia                                      gj      ga
        ik      ib                                      gk      gb
        il      ic                                      gl      gc
baijikil##########icibiaaa      aacacbccab      abgjgkgl##########gcgbgabb
dl      ##      ##      cl      cl      cd      cd      ##      ##      dd
dk      ##      ##      ck      ck      ce      ce      ##      ##      de
dj      ##      ##      cj      cj      cf      cf      ##      ##      df
bdigihii##########idieifad      adcichcgac      acggghgi##########gdgegfbc
        ii      id                                      gi      gd
        ih      ie                                      gh      ge
        ig      if                                      gg      gf
        bdeiehegad              adcichcgac              acedeeefbc
                                hj      ha
                                hk      hb
                                hl      hc
                        adhjhkhlkalalblckdhchbhaac      badadbdcbb
                        eg      lj      ld      ed      dl      dd
                        eh      lk      le      ee      dk      de
                        ei      ll      lf      ef      dj      df
        kalalblckd      bdhghhhikblglhlikchdhehfbc      bddidhdgbc
        jj      ja              hi      hd
        jk      jb              hh      he
        jl      jc              hg      hf
kajjjkjl##########jcjbjakd      bddidhdgbc
lj      ##      ##      ld
lk      ##      ##      le
ll      ##      ##      lf
kbjgjhji##########jdjejfkc
        ji      jd
        jh      je
        jg      jf
        kblglhlikc
