bbb bbc bbk bbr bcb bcc bck bcr bkb bkc bkk bkr brb brk brr c-- cbb cbc cbk cbr ccb ccc cck ccr ckb ckc crb crc crk crr kbb kbc kbk kbr kcb kcc kck kcr kkb kkc kkk kkr krc krk krr rbb rbc rbk rbr rcb rcc rcr rkb rkc rkk rrb rrc rrk rrr

bbbb bbrc bcbc bccc brcb brkb brrr cbbc cbcc cbcr cbkr ccbc cccb cccc ccrc ckbc ckck ckrc crbc crcc crcr crkc kbbb kbbc kbbk kbbr kbcb kbck kbkb kbkk kbkr kbrb kbrc kbrk kcbc kcbk kcbr kccb kccc kcck kccr kckc kckk kckr kcrc kcrr kkbb kkbr kkcb kkck kkcr kkkk kkrb kkrc kkrk kkrr krbb krbk krbr krcb krcc krkc krkk krkr krrb krrc krrk krrr rbbb rbbr rcbc rccb rccc rrrr

b-r-k brrrr ccccc

bbbbbb

bbbbbbb

bbbbbbbb

bbbbbbbbbbbbbbb ccccccccccccccc