-ol bbb bbk bbl bbm bbn bbo bbr bkb bkk bkl bkm bkn bko bkr blb blk bll blm bln blo blr bmb bmk bml bmm bmn bmo bmr bnb bnk bnl bnn bno bnr bob bok bol bom bon boo bor brb brk brl brm brn bro brr kbb kbk kbl kbm kbn kbo kbr kkb kkk kkl kkm kkn kkr kl- klb klm klo klr kmb kmk kml kmm kmo kn- knk knl knm knn kno knr kob kok kol kom kon koo kor krk krl krn kro krr lbb lbk lbl lbm lbo lbr lkb lkl lkr llb llk lll llm lln llo llr lmb lmk lml lmm lmn lmo lmr lnb lnk lnl lnm lnn lno lnr lob lok lol lom lon loo lor lrb lrk lrm lrn lro lrr m-o m-r mbb mbk mbl mbm mbo mbr mkb mkk mkl mkm mkn mko mkr mlb mlk mll mlm mln mlo mlr mmb mmk mml mmm mmn mmo mmr mnb mnk mnl mnm mnn mno mnr mob mok mol mom mon moo mor mrb mrk mrl mrm mrn mro mrr nbb nbk nbl nbm nbn nbo nbr nkk nkm nkn nko nkr nlb nlk nll nlm nln nlo nlr nmb nmk nml nmm nmn nmo nmr nnb nnk nnl nnm nnn nno no- nob nok nol nom non noo nor nrb nrk nrl nrm nrn nro nrr ob- obb obk obl obm obn obo obr okb okk okl oko okr olb olk oll olm oln olo om- omb oml omm omn omo omr on- onb onk onl onn ono onr oo- oob ook ool oom oon ooo oor or- orb ork orl orm orn oro orr rbb rbk rbl rbm rbn rbo rbr rkb rkk rkm rko rll rlm rln rlo rlr rmb rml rmm rmn rmo rmr rnb rnm rnn rno rnr rob rok rol rom ron roo ror rrb rrk rrl rrm rrn rrr