-er bbb bbe bbg bbi bbk bbm bbo bbr be- beb bee beg bei bek bem beo ber bgb bge bgg bgi bgk bgm bgo bgr bi- bib bie big bii bik bim bio bir bkb bke bkg bkk bkm bko bkr bmb bme bmg bmi bmk bmm bmo bmr bob boe bog boi bok bom boo bor brb bre brg bri brk brm bro brr ebb ebe ebg ebi ebk ebm ebo ebr eeb eee eeg eek eem eeo eer egb ege egg egi egm ego egr eib eie eig eii eik eim eio eir ekb eke ekg eki eko ekr em- emb eme emg emi emk emm emo emr eo- eob eoe eog eoi eok eom eoo eor erb ere erg eri erk erm ero err gbe gbg gbi gbk gbm gbo gbr ge- geb gee geg gei gek gem geo ger ggb ggg ggi ggm ggo ggr gib gie gig gii gik gim gio gir gkb gkm gko gmb gme gmg gmi gmm gmo gmr gob goe gog goi gok gom goo gor grb gre grg gri grk grm gro grr ibb ibe ibg ibi ibk ibm ibo ibr ie- iee ieg iei iek iem ier igb ige igg igi igk igm igo igr iib iie iii iim iio iir ikb ike iki ikk iko ikr im- imb ime img imi imm imo io- iob ioe iog ioi iom ioo ior ir- irb ire irg iri irk irm iro irr kbb kbe kbi kbk kbm kbo kbr ke- keb kee keg kei kek kem keo ker kgb kgi kgm kgo kib kie kig kii kik kim kio kir kkb kke kki kkk kkm kkr kmb kme kmg kmi kmk kmm kmo kob koe kog koi kok kom koo kor krg kri krk kro krr m-o m-r mbb mbe mbg mbi mbk mbm mbo mbr meb mee meg mei mek mem meo mer mgb mge mgi mgk mgm mgo mgr mi- mib mie mig mii mik mim mio mir mkb mke mkg mkk mkm mko mkr mmb mme mmg mmi mmk mmm mmo mmr mob moe mog moi mok mom moo mor mrb mre mrg mri mrk mrm mro mrr o-i ob- obb obe obg obi obk obm obo obr oeb oee oeg oei oem oeo oer oge ogg ogi ogo oib oie oii oik oim oio oir okb oke okg oki okk oko okr om- omb ome omg omi omm omo omr oo- oob oog ooi ook oom ooo oor or- orb ore org ori ork orm oro orr rbb rbe rbg rbi rbk rbm rbo rbr re- reb ree reg rei rek rem reo rer rgb rge rgg rgi rgk rgo rgr rib rie rig rii rik rim rio rir rkb rke rkg rkk rkm rko rmb rme rmg rmi rmm rmo rmr rob roe rog roi rok rom roo ror rrb rrg rri rrk rrm rrr