bbb bbi bbk bbm bbo bbr bbs bbt bi- bib bii bik bim bio bir bis bit bkb bkk bkm bko bkr bks bkt bmb bmi bmk bmm bmo bmr bms bmt bob boi bok bom boo bor bos bot brb bri brk brm bro brr brs brt bsb bsi bsk bsm bso bsr bss bst btb bti btk btm bto btr bts btt ibb ibi ibk ibm ibo ibr ibs ibt iib iii iim iio iir iis iit ikb iki ikk iko ikr iks ikt im- imb imi imm imo ims imt io- iob ioi iom ioo ior ios iot ir- irb iri irk irm iro irr irs irt is- isb isi isk ism iso isr iss ist itb iti itk itm ito its itt k-t kbb kbi kbk kbm kbo kbr kbs kib kii kik kim kio kir kis kit kkb kki kkk kkm kkr kks kkt kmb kmi kmk kmm kmo kms kmt kob koi kok kom koo kor kos kot kri krk kro krr krs krt ksb ksi ksk ksm kso ksr kss kst ktb ktk ktm kto ktr kts ktt m-o m-r mbb mbi mbk mbm mbo mbr mbs mbt mi- mib mii mik mim mio mir mis mit mkb mkk mkm mko mkr mks mkt mmb mmi mmk mmm mmo mmr mms mmt mob moi mok mom moo mor mos mot mrb mri mrk mrm mro mrr mrs mrt msb msi msk msm mso msr mss mst mtb mti mtk mtm mto mtr mts mtt o-i ob- obb obi obk obm obo obr obs obt oib oii oik oim oio oir ois oit okb oki okk oko okr oks om- omb omi omm omo omr oms omt oo- oob ooi ook oom ooo oor oos oot or- orb ori ork orm oro orr ors ort os- osb osi osk osm oso osr oss ost ot- otb oti otk otm oto otr ots ott rbb rbi rbk rbm rbo rbr rbs rbt rib rii rik rim rio rir ris rit rkb rkk rkm rko rks rkt rmb rmi rmm rmo rmr rms rmt rob roi rok rom roo ror ros rot rrb rri rrk rrm rrr rrs rrt rsb rsi rsk rsm rso rsr rss rst rtb rti rtk rtm rto rtr rts rtt sbb sbi sbk sbm sbo sbr sbs sbt sib sii sik sim sio sir sis sit sk- skb ski skk skm sko skr sks skt smb smi smk smm smo smr sms smt sob soi sok som soo sor sos sot sr- srb sri srk srm sro srr srs srt ss- ssb ssi ssk ssm sso ssr sss sst stb sti stk stm sto str sts stt tbb tbi tbk tbm tbo tbr tbs tbt tib tii tik tim tio tir tis tit tkb tkk tkm tko tkr tks tkt tmb tmi tmk tmm tmo tmr tms tmt to- tob toi tok tom too tor tos tot trb tri trk trm tro trr trs trt tsb tsi tsk tsm tso tsr tss tst ttb tti ttk ttm tto ttr tts ttt