-ic b-u bbb bbc bbi bbm bbr bbu bcb bcc bci bcm bcr bcu bi- bib bic bii bim bir biu bmb bmc bmi bmm bmr bmu brb bri brm brr bru bub buc bui bum bur buu c-- cbb cbc cbi cbm cbr cbu ccb ccc cci ccm ccr ccu ci- cib cic cii cim cir ciu cmb cmc cmi cmm cmr cmu crb crc cri crm crr cru cub cuc cui cum cur cuu ibb ibc ibi ibm ibr ibu icb icc ici icm icr icu iib iic iii iim iir iiu im- imb imc imi imm imu ir- irb irc iri irm irr iru iu- iub iuc iui ium iur m-r mbb mbc mbi mbm mbr mbu mc- mcb mcc mci mcm mcr mcu mi- mib mic mii mim mir miu mmb mmc mmi mmm mmr mmu mrb mrc mri mrm mrr mru mub muc mui mum mur muu rbb rbc rbi rbm rbr rbu rcb rcc rci rcm rcr rcu rib ric rii rim rir rmb rmc rmi rmm rmr rrb rrc rri rrm rrr rru rub ruc rui rum rur ruu ubb ubc ubi ubr ubu ucb ucc uci ucm ucr ucu uib uic uii uim uir uiu um- umb umc umi umm umr umu ur- urb urc uri urm urr uru uuc uum uur uuu