b-u bbb bbc bbm bbr bbu bcb bcc bcm bcr bcu bmb bmc bmm bmr bmu brb brm brr bru bub buc bum bur buu c-- cbb cbc cbm cbr cbu ccb ccc ccm ccr ccu cmb cmc cmm cmr cmu crb crc crm crr cru cub cuc cum cur cuu m-r mbb mbc mbm mbr mbu mc- mcb mcc mcm mcr mcu mmb mmc mmm mmr mmu mrb mrc mrm mrr mru mub muc mum mur muu rbb rbc rbm rbr rbu rcb rcc rcm rcr rcu rmb rmc rmm rmr rrb rrc rrm rrr rru rub ruc rum rur ruu ubb ubc ubr ubu ucb ucc ucm ucr ucu um- umb umc umm umr umu ur- urb urc urm urr uru uuc uum uur uuu

bbbb bbcm bbrc bcbc bccc bccm bcru bcuc brcb brmc brrm brrr bruc brum bubb bubu bucc bucu bum- bumb bur- burb burm burr buru cbbc cbcc cbcm cbcr cbcu cbrm ccbc cccb cccc cccm cccu ccmb ccmc ccmm ccrc ccuc cmbc cmcc cmmb cmmc cmrr crbc crbu crcc crcr crmb crub crum cub- cubb cucc cucm cum- curb curr mcbc mccc mcmc mcrc mmcc mmcm mmmc mmmm mmrc mr-c mrbb mrbm mrcb mrcc mrmc mrrc muc- mucc mucu mumm mumu murc murr muru rbbb rbbr rcbc rccb rccc rrmc rrrr rrum rubb rubu rumb rumm rurc ruru ucbc ucmc ucrc umb- urum urur uuuu

brmmm brrrr brumm bucum bucur bumbu burcu burru buruc ccccc crumb cubub cumbu cumm- mburu mmccc mmmcc mmmmm mrcub mucum mucur mumcu mummu murru murum rummu urubu urucu uuuuu

bbbbbb brubru bububu burbur cucurb cumbum curmur mccrum murmur muumuu rcrumb rubrum rumbur ucurum

bbbbbbb muu-muu

bbbbbbbb buruburu cucurucu curucucu mbumburu murumuru

mmmmmmmmmmmm

bbbbbbbbbbbbbbb ccccccccccccccc