-ic b-u bbb bbc bbi bbm bbo bbr bbu bcb bcc bci bcm bco bcr bcu bi- bib bic bii bim bio bir biu bmb bmc bmi bmm bmo bmr bmu bob boc boi bom boo bor bou brb bri brm bro brr bru bub buc bui bum buo bur buu c-- cbb cbc cbi cbm cbo cbr cbu ccb ccc cci ccm cco ccr ccu ci- cib cic cii cim cio cir ciu cmb cmc cmi cmm cmo cmr cmu co- cob coc coi com coo cor cou crb crc cri crm cro crr cru cub cuc cui cum cuo cur cuu ibb ibc ibi ibm ibo ibr ibu icb icc ici icm ico icr icu iib iic iii iim iio iir iiu im- imb imc imi imm imo imu io- iob ioc ioi iom ioo ior iou ir- irb irc iri irm iro irr iru iu- iub iuc iui ium iur m-o m-r mbb mbc mbi mbm mbo mbr mbu mc- mcb mcc mci mcm mco mcr mcu mi- mib mic mii mim mio mir miu mmb mmc mmi mmm mmo mmr mmu mob moc moi mom moo mor mou mrb mrc mri mrm mro mrr mru mub muc mui mum mur muu o-i ob- obb obc obi obm obo obr obu oc- ocb occ oci ocm oco ocr ocu oib oic oii oim oio oir oiu om- omb omc omi omm omo omr omu oo- oob ooc ooi oom ooo oor or- orb orc ori orm oro orr oru ou- ouc oui oum ouo our rbb rbc rbi rbm rbo rbr rbu rcb rcc rci rcm rco rcr rcu rib ric rii rim rio rir rmb rmc rmi rmm rmo rmr rob roc roi rom roo ror rou rrb rrc rri rrm rrr rru rub ruc rui rum ruo rur ruu ubb ubc ubi ubo ubr ubu ucb ucc uci ucm uco ucr ucu uib uic uii uim uio uir uiu um- umb umc umi umm umo umr umu uob uoc uom uoo uor ur- urb urc uri urm uro urr uru uuc uum uur uuu