bbb bbc bbn bbx bcb bcc bcn bcv bcx bcz bnb bnc bnn bnv bnx bnz bvb bvc bvn bvv bxb bxn bxx bzn bzz c-- cbb cbc cbn cbv cbx cbz ccb ccc ccn ccv ccx ccz cn- cnb cnc cnn cnv cnx cvb cvc cvn cvv cvx cvz cxc cxv cxx cz- czc nbb nbc nbn nbv nbx ncb ncc ncn ncv ncx nnb nnc nnn nnv nnz nvb nvc nvn nvv nxc nxv nzb nzz vbc vbv vbz vcc vcn vcx vn- vnv vvb vvc vvv vvz vxv vzn xbc xbx xcb xcv xcx xnc xxv xxx zbb zbc zbv znc znn zxx zzx zzz

bbbb bcbc bccc bzzz cbbc cbcc cbcn cbvb cbvn ccbc ccbn cccb cccc cccv ccnb ccnc cnbc cnnz cvcc cxxv cxxx nbbc nbcc ncbc nccc nccn ncnc nnnn nvcc nzcc vbcc vvvv xxvc xxxv xxxx zzzz

ccccc cnnnn cxxxv zzzzz

bbbbbb vvvvvv

bbbbbbb xxxxxxx

bbbbbbbb

xxxxxxxxxxxx

bbbbbbbbbbbbbbb bzzzzzzzzzzzzzz ccccccccccccccc