bbb bbi bbk bbm bbo bbr bbs bi- bib bii bik bim bio bir bis bkb bkk bkm bko bkr bks bmb bmi bmk bmm bmo bmr bms bob boi bok bom boo bor bos brb bri brk brm bro brr brs bsb bsi bsk bsm bso bsr bss ibb ibi ibk ibm ibo ibr ibs iib iii iim iio iir iis ikb iki ikk iko ikr iks im- imb imi imm imo ims io- iob ioi iom ioo ior ios ir- irb iri irk irm iro irr irs is- isb isi isk ism iso isr iss kbb kbi kbk kbm kbo kbr kbs kib kii kik kim kio kir kis kkb kki kkk kkm kkr kks kmb kmi kmk kmm kmo kms kob koi kok kom koo kor kos kri krk kro krr krs ksb ksi ksk ksm kso ksr kss m-o m-r mbb mbi mbk mbm mbo mbr mbs mi- mib mii mik mim mio mir mis mkb mkk mkm mko mkr mks mmb mmi mmk mmm mmo mmr mms mob moi mok mom moo mor mos mrb mri mrk mrm mro mrr mrs msb msi msk msm mso msr mss o-i ob- obb obi obk obm obo obr obs oib oii oik oim oio oir ois okb oki okk oko okr oks om- omb omi omm omo omr oms oo- oob ooi ook oom ooo oor oos or- orb ori ork orm oro orr ors os- osb osi osk osm oso osr oss rbb rbi rbk rbm rbo rbr rbs rib rii rik rim rio rir ris rkb rkk rkm rko rks rmb rmi rmm rmo rmr rms rob roi rok rom roo ror ros rrb rri rrk rrm rrr rrs rsb rsi rsk rsm rso rsr rss sbb sbi sbk sbm sbo sbr sbs sib sii sik sim sio sir sis sk- skb ski skk skm sko skr sks smb smi smk smm smo smr sms sob soi sok som soo sor sos sr- srb sri srk srm sro srr srs ss- ssb ssi ssk ssm sso ssr sss