-al -ol a-a a-b aaa aab aak aal aam aao aar ab- aba abb abk abl abm abo abr aka akb akk akl akm ako akr al- ala alb alk all alm alo alr ama amb amk aml amm amo amr aoa aob aok aol aom aoo aor ar- ara arb ark arl arm aro arr baa bab bak bal bam bao bar bba bbb bbk bbl bbm bbo bbr bka bkb bkk bkl bkm bko bkr bla blb blk bll blm blo blr bma bmb bmk bml bmm bmo bmr boa bob bok bol bom boo bor bra brb brk brl brm bro brr ka- kaa kab kak kal kam kao kar kba kbb kbk kbl kbm kbo kbr kkb kkk kkl kkm kkr kl- kla klb klm klo klr kma kmb kmk kml kmm kmo koa kob kok kol kom koo kor kra krk krl kro krr la- laa lab lak lal lam lao lar lba lbb lbk lbl lbm lbo lbr lka lkb lkl lkr lla llb llk lll llm llo llr lma lmb lmk lml lmm lmo lmr loa lob lok lol lom loo lor lra lrb lrk lrm lro lrr m-o m-r maa mab mak mal mam mao mar mba mbb mbk mbl mbm mbo mbr mka mkb mkk mkl mkm mko mkr mla mlb mlk mll mlm mlo mlr mma mmb mmk mml mmm mmo mmr moa mob mok mol mom moo mor mra mrb mrk mrl mrm mro mrr oaa oab oak oal oam oao oar ob- oba obb obk obl obm obo obr oka okb okk okl oko okr ola olb olk oll olm olo om- oma omb oml omm omo omr oo- ooa oob ook ool oom ooo oor or- ora orb ork orl orm oro orr ra- raa rab rak ral ram rao rar rba rbb rbk rbl rbm rbo rbr rkb rkk rkm rko rla rll rlm rlo rlr rma rmb rml rmm rmo rmr roa rob rok rol rom roo ror rra rrb rrk rrl rrm rrr