-ol bbb bbe bbk bbl bbm bbo be- beb bee bek bel bem beo bkb bke bkk bkl bkm bko blb ble blk bll blm blo bmb bme bmk bml bmm bmo bob boe bok bol bom boo ebb ebe ebk ebl ebm ebo eeb eee eek eel eem eeo ekb eke ekl eko elb ele elk ell elm elo em- emb eme emk eml emm emo eo- eob eoe eok eol eom eoo kbb kbe kbk kbl kbm kbo ke- keb kee kek kel kem keo kkb kke kkk kkl kkm kl- klb klm klo kmb kme kmk kml kmm kmo kob koe kok kol kom koo lbb lbe lbk lbl lbm lbo leb lee lek lel lem leo lkb lkl llb lle llk lll llm llo lmb lme lmk lml lmm lmo lob loe lok lol lom loo m-o mbb mbe mbk mbl mbm mbo meb mee mek mel mem meo mkb mke mkk mkl mkm mko mlb mle mlk mll mlm mlo mmb mme mmk mml mmm mmo mob moe mok mol mom moo ob- obb obe obk obl obm obo oeb oee oel oem oeo okb oke okk okl oko olb ole olk oll olm olo om- omb ome oml omm omo oo- oob ook ool oom ooo