-er bbb bbe bbi bbk bbm bbo bbr be- beb bee bei bek bem beo ber bi- bib bie bii bik bim bio bir bkb bke bkk bkm bko bkr bmb bme bmi bmk bmm bmo bmr bob boe boi bok bom boo bor brb bre bri brk brm bro brr ebb ebe ebi ebk ebm ebo ebr eeb eee eek eem eeo eer eib eie eii eik eim eio eir ekb eke eki eko ekr em- emb eme emi emk emm emo emr eo- eob eoe eoi eok eom eoo eor erb ere eri erk erm ero err ibb ibe ibi ibk ibm ibo ibr ie- iee iei iek iem ier iib iie iii iim iio iir ikb ike iki ikk iko ikr im- imb ime imi imm imo io- iob ioe ioi iom ioo ior ir- irb ire iri irk irm iro irr kbb kbe kbi kbk kbm kbo kbr ke- keb kee kei kek kem keo ker kib kie kii kik kim kio kir kkb kke kki kkk kkm kkr kmb kme kmi kmk kmm kmo kob koe koi kok kom koo kor kri krk kro krr m-o m-r mbb mbe mbi mbk mbm mbo mbr meb mee mei mek mem meo mer mi- mib mie mii mik mim mio mir mkb mke mkk mkm mko mkr mmb mme mmi mmk mmm mmo mmr mob moe moi mok mom moo mor mrb mre mri mrk mrm mro mrr o-i ob- obb obe obi obk obm obo obr oeb oee oei oem oeo oer oib oie oii oik oim oio oir okb oke oki okk oko okr om- omb ome omi omm omo omr oo- oob ooi ook oom ooo oor or- orb ore ori ork orm oro orr rbb rbe rbi rbk rbm rbo rbr re- reb ree rei rek rem reo rer rib rie rii rik rim rio rir rkb rke rkk rkm rko rmb rme rmi rmm rmo rmr rob roe roi rok rom roo ror rrb rri rrk rrm rrr