-al -er -ol a-a a-b aaa aab aae aak aal aam aao aar ab- aba abb abe abk abl abm abo abr aea aeb aee aek ael aem aeo aer aka akb ake akk akl akm ako akr al- ala alb ale alk all alm alo alr ama amb ame amk aml amm amo amr aoa aob aoe aok aol aom aoo aor ar- ara arb are ark arl arm aro arr baa bab bae bak bal bam bao bar bba bbb bbe bbk bbl bbm bbo bbr be- bea beb bee bek bel bem beo ber bka bkb bke bkk bkl bkm bko bkr bla blb ble blk bll blm blo blr bma bmb bme bmk bml bmm bmo bmr boa bob boe bok bol bom boo bor bra brb bre brk brl brm bro brr eaa eab eae eak eal eam eao ear eba ebb ebe ebk ebl ebm ebo ebr eea eeb eee eek eel eem eeo eer eka ekb eke ekl eko ekr ela elb ele elk ell elm elo elr em- ema emb eme emk eml emm emo emr eo- eoa eob eoe eok eol eom eoo eor era erb ere erk erl erm ero err ka- kaa kab kae kak kal kam kao kar kba kbb kbe kbk kbl kbm kbo kbr ke- kea keb kee kek kel kem keo ker kkb kke kkk kkl kkm kkr kl- kla klb klm klo klr kma kmb kme kmk kml kmm kmo koa kob koe kok kol kom koo kor kra krk krl kro krr la- laa lab lae lak lal lam lao lar lba lbb lbe lbk lbl lbm lbo lbr lea leb lee lek lel lem leo ler lka lkb lkl lkr lla llb lle llk lll llm llo llr lma lmb lme lmk lml lmm lmo lmr loa lob loe lok lol lom loo lor lra lrb lrk lrm lro lrr m-o m-r maa mab mae mak mal mam mao mar mba mbb mbe mbk mbl mbm mbo mbr mea meb mee mek mel mem meo mer mka mkb mke mkk mkl mkm mko mkr mla mlb mle mlk mll mlm mlo mlr mma mmb mme mmk mml mmm mmo mmr moa mob moe mok mol mom moo mor mra mrb mre mrk mrl mrm mro mrr oaa oab oae oak oal oam oao oar ob- oba obb obe obk obl obm obo obr oea oeb oee oel oem oeo oer oka okb oke okk okl oko okr ola olb ole olk oll olm olo om- oma omb ome oml omm omo omr oo- ooa oob ook ool oom ooo oor or- ora orb ore ork orl orm oro orr ra- raa rab rae rak ral ram rao rar rba rbb rbe rbk rbl rbm rbo rbr re- rea reb ree rek rel rem reo rer rkb rke rkk rkm rko rla rle rll rlm rlo rlr rma rmb rme rml rmm rmo rmr roa rob roe rok rol rom roo ror rra rrb rrk rrl rrm rrr