-al -er -ol a-a a-b aaa aab aae aaf aal aam aao aar ab- aba abb abe abf abl abm abo abr aea aeb aee aef ael aem aeo aer af- afa afb afe aff afl afm afo afr al- ala alb ale alf all alm alo alr ama amb ame amf aml amm amo amr aoa aob aoe aof aol aom aoo aor ar- ara arb are arf arl arm aro arr baa bab bae baf bal bam bao bar bba bbb bbe bbf bbl bbm bbo bbr be- bea beb bee bef bel bem beo ber bfa bfb bfe bff bfl bfm bfo bfr bla blb ble blf bll blm blo blr bma bmb bme bmf bml bmm bmo bmr boa bob boe bof bol bom boo bor bra brb bre brf brl brm bro brr eaa eab eae eaf eal eam eao ear eba ebb ebe ebf ebl ebm ebo ebr eea eeb eee eef eel eem eeo eer ef- efa efb efe eff efl efm efo efr ela elb ele elf ell elm elo elr em- ema emb eme emf eml emm emo emr eo- eoa eob eoe eof eol eom eoo eor era erb ere erf erl erm ero err faa fab fae faf fal fam fao far fba fbb fbe fbf fbl fbm fbo fbr fea feb fee fef fel fem feo fer ffa ffe fff ffl ffm ffo ffr fla flb fle flf fll flm flo flr fma fmb fme fmf fml fmm fmo fmr foa fob foe fof fol fom foo for fra frb fre frf frl frm fro frr la- laa lab lae laf lal lam lao lar lba lbb lbe lbf lbl lbm lbo lbr lea leb lee lef lel lem leo ler lfa lfb lfe lff lfl lfm lfo lfr lla llb lle llf lll llm llo llr lma lmb lme lmf lml lmm lmo lmr loa lob loe lof lol lom loo lor lra lrb lrf lrm lro lrr m-f m-o m-r maa mab mae maf mal mam mao mar mba mbb mbe mbf mbl mbm mbo mbr mea meb mee mef mel mem meo mer mfa mfb mfe mff mfl mfm mfo mfr mla mlb mle mlf mll mlm mlo mlr mma mmb mme mmf mml mmm mmo mmr moa mob moe mof mol mom moo mor mra mrb mre mrf mrl mrm mro mrr oaa oab oae oaf oal oam oao oar ob- oba obb obe obf obl obm obo obr oea oeb oee oef oel oem oeo oer of- ofa ofb ofe off ofl ofm ofo ofr ola olb ole olf oll olm olo om- oma omb ome omf oml omm omo omr oo- ooa oob oof ool oom ooo oor or- ora orb ore orf orl orm oro orr ra- raa rab rae raf ral ram rao rar rba rbb rbe rbf rbl rbm rbo rbr re- rea reb ree ref rel rem reo rer rfa rfb rfe rff rfl rfm rfo rfr rla rle rlf rll rlm rlo rlr rma rmb rme rmf rml rmm rmo rmr roa rob roe rof rol rom roo ror rra rrb rrf rrl rrm rrr