-ic b-u bbb bbc bbi bbr bbu bcb bcc bci bcr bcu bi- bib bic bii bir biu brb bri brr bru bub buc bui bur buu c-- cbb cbc cbi cbr cbu ccb ccc cci ccr ccu ci- cib cic cii cir ciu crb crc cri crr cru cub cuc cui cur cuu ibb ibc ibi ibr ibu icb icc ici icr icu iib iic iii iir iiu ir- irb irc iri irr iru iu- iub iuc iui iur rbb rbc rbi rbr rbu rcb rcc rci rcr rcu rib ric rii rir rrb rrc rri rrr rru rub ruc rui rur ruu ubb ubc ubi ubr ubu ucb ucc uci ucr ucu uib uic uii uir uiu ur- urb urc uri urr uru uuc uur uuu

bbbb bbci bbrc bcbc bccc bcci bcru bcuc bibb bibi bicc bici birb biri birr biru brcb bric brrr bruc bubb bubi bubu bucc buci bucu buic buir buiu bur- burb buri burr buru cbbc cbcc cbcr cbcu cbir ccbc cccb cccc ccci cccu ccic ccii ccir ccrc ccri ccuc cibc cibi cicc cici cicr cicu ciii cirb circ ciri cirr ciuc crbc crbu crcc crcr crib cric criu crub cub- cubb cubi cucc cuci cui- cuir curb curi curr ibrc ibri icbc iccb iccc icci iccr iccu icrc icrr icru icub iiii iirc iiuc ircc ircu iri- iric irrc irri iucc iuiu rbbb rbbr rcbc rccb rccc rcic rib- ribu ricc riri rrrr rubb rubi rubu ruci rurc ruri ruru ubbi ubic ubii ubir ucbc ucci ucrc uirr urbi urci urib uric uriu urri urur uuri uuuu

bibic bibri birur brrrr bruiu bruri bucci bucic bucur buici burcu buric burri burru buruc ccccc cccii cciii cibir ciric cirr- cirri cribb cubi- cubic cubub cucui curbi curic curri ibbur icbrr icici iiiii ircii rcirc ribbi ricci rubbi rucci ruiru ruric ubirr urbic uric- urric urubu urucu ururi uuuuu

bbbbbb bibiri bibiru bircii biribi bribir bribri brubru bububu bucici burbur bururi cibiru cirici cirri- ciucci cucici cucurb cui-ui curcic ibicui ribici rubric rucici urucui

bbbbbbb bicubic bricriu cri-cri cubrici curucui iricici uriburu urubici urucuri

bbbbbbbb buruburu cucurucu curucucu i-ii-iii

bbbbbbbbbbbbbbb ccccccccccccccc