bbb bbc bbl bbn bbt bcb bcc bcl bcn bct blb blc bll bln blt bnb bnc bnl bnn bnt btb btc btl btn btt c-- cbb cbc cbl cbn cbt ccb ccc ccl ccn cct cl- clb clc cll cln clt cn- cnb cnc cnl cnn cnt ctb ctc ctl ctn ctt lbb lbc lbl lbt lcb lcc lcl lcn lct llb llc lll lln llt lnb lnc lnl lnn lnt ltb ltc ltl ltt nbb nbc nbl nbn nbt ncb ncc ncl ncn nct nlb nlc nll nln nlt nnb nnc nnl nnn nnt ntb ntc ntn ntt tbb tbc tbl tbn tbt tcb tcc tcl tcn tct tlc tll tln tlt tnb tnc tnl tnn tnt ttb ttc ttl ttn ttt

bbbb bblb bcbc bccc bccl bctc blbt btcc btcl bttb cbbc cbcc cbcl cbcn cbct cblb cblc cbln cbtc cbtl ccbc ccbn cccb cccc cccl cclc ccnb ccnc cctb cctc cctl cctt cltb cltc cnbc cnbl cntc cttn lbcc lcbc lccc lctl llcc lllc llll lntc ltbl ltcc ltnt lttc nbbc nbcc ncbc nccc nccn ncct nclc ncln ncnc nctc nlcc nnnn nntn ntbc ntcc tbcb tbcc tccc tcnn tctc tnbc tncc ttbb ttcn tttt

ccccc cnnnn cntln cntnl lblnc tbtbt tllnn tntnt ttttt

bbbbbb

bbbbbbb

bbbbbbbb

bbbbbbbbbbbbbbb ccccccccccccccc