-al -er -ol a-a a-b aaa aab aae aaf aal aam aao aar aas ab- aba abb abe abf abl abm abo abr abs aea aeb aee aef ael aem aeo aer aes af- afa afb afe aff afl afm afo afr afs al- ala alb ale alf all alm alo alr als ama amb ame amf aml amm amo amr ams aoa aob aoe aof aol aom aoo aor aos ar- ara arb are arf arl arm aro arr ars as- asa asb ase asf asl asm aso asr ass baa bab bae baf bal bam bao bar bas bba bbb bbe bbf bbl bbm bbo bbr bbs be- bea beb bee bef bel bem beo ber bes bfa bfb bfe bff bfl bfm bfo bfr bfs bla blb ble blf bll blm blo blr bls bma bmb bme bmf bml bmm bmo bmr bms boa bob boe bof bol bom boo bor bos bra brb bre brf brl brm bro brr brs bsa bsb bse bsf bsl bsm bso bsr bss eaa eab eae eaf eal eam eao ear eas eba ebb ebe ebf ebl ebm ebo ebr ebs eea eeb eee eef eel eem eeo eer ees ef- efa efb efe eff efl efm efo efr efs ela elb ele elf ell elm elo elr els em- ema emb eme emf eml emm emo emr ems eo- eoa eob eoe eof eol eom eoo eor eos era erb ere erf erl erm ero err ers es- esa esb ese esf esl esm eso esr ess faa fab fae faf fal fam fao far fas fba fbb fbe fbf fbl fbm fbo fbr fbs fea feb fee fef fel fem feo fer fes ffa ffe fff ffl ffm ffo ffr ffs fla flb fle flf fll flm flo flr fls fma fmb fme fmf fml fmm fmo fmr fms foa fob foe fof fol fom foo for fos fra frb fre frf frl frm fro frr frs fsa fsb fse fsf fsl fsm fso fsr fss la- laa lab lae laf lal lam lao lar las lba lbb lbe lbf lbl lbm lbo lbr lbs lea leb lee lef lel lem leo ler les lfa lfb lfe lff lfl lfm lfo lfr lfs lla llb lle llf lll llm llo llr lls lma lmb lme lmf lml lmm lmo lmr lms loa lob loe lof lol lom loo lor los lra lrb lrf lrm lro lrr lrs lsa lsb lse lsf lsl lsm lso lsr lss m-f m-o m-r maa mab mae maf mal mam mao mar mas mba mbb mbe mbf mbl mbm mbo mbr mbs mea meb mee mef mel mem meo mer mes mfa mfb mfe mff mfl mfm mfo mfr mfs mla mlb mle mlf mll mlm mlo mlr mls mma mmb mme mmf mml mmm mmo mmr mms moa mob moe mof mol mom moo mor mos mra mrb mre mrf mrl mrm mro mrr mrs msa msb mse msf msl msm mso msr mss oaa oab oae oaf oal oam oao oar oas ob- oba obb obe obf obl obm obo obr obs oea oeb oee oef oel oem oeo oer oes of- ofa ofb ofe off ofl ofm ofo ofr ofs ola olb ole olf oll olm olo ols om- oma omb ome omf oml omm omo omr oms oo- ooa oob oof ool oom ooo oor oos or- ora orb ore orf orl orm oro orr ors os- osa osb ose osf osl osm oso osr oss ra- raa rab rae raf ral ram rao rar ras rba rbb rbe rbf rbl rbm rbo rbr rbs re- rea reb ree ref rel rem reo rer res rfa rfb rfe rff rfl rfm rfo rfr rfs rla rle rlf rll rlm rlo rlr rls rma rmb rme rmf rml rmm rmo rmr rms roa rob roe rof rol rom roo ror ros rra rrb rrf rrl rrm rrr rrs rsa rsb rse rsf rsl rsm rso rsr rss saa sab sae saf sal sam sao sar sas sba sbb sbe sbf sbl sbm sbo sbr sbs se- sea seb see sef sel sem seo ser ses sfa sfb sfe sff sfl sfm sfo sfr sfs sla slb sle slf sll slm slo slr sls sma smb sme smf sml smm smo smr sms soa sob soe sof sol som soo sor sos sr- sra srb sre srf srl srm sro srr srs ss- ssa ssb sse ssf ssl ssm sso ssr sss