-al -er -ol a-a a-b aaa aab aae aaf aal aao aap aar aas ab- aba abb abe abf abl abo abp abr abs aea aeb aee aef ael aeo aep aer aes af- afa afb afe aff afl afo afp afr afs al- ala alb ale alf all alo alp alr als aoa aob aoe aof aol aoo aop aor aos ap- apa apb ape apf apl apo app apr aps ar- ara arb are arf arl aro arp arr ars as- asa asb ase asf asl aso asp asr ass b-p baa bab bae baf bal bao bap bar bas bba bbb bbe bbf bbl bbo bbp bbr bbs be- bea beb bee bef bel beo bep ber bes bfa bfb bfe bff bfl bfo bfp bfr bfs bla blb ble blf bll blo blp blr bls boa bob boe bof bol boo bop bor bos bpa bpb bpe bpf bpl bpo bpp bpr bps bra brb bre brf brl bro brp brr brs bsa bsb bse bsf bsl bso bsp bsr bss eaa eab eae eaf eal eao eap ear eas eba ebb ebe ebf ebl ebo ebp ebr ebs eea eeb eee eef eel eeo eep eer ees ef- efa efb efe eff efl efo efp efr efs ela elb ele elf ell elo elp elr els eo- eoa eob eoe eof eol eoo eop eor eos ep- epa epb epe epf epl epo epp epr eps era erb ere erf erl ero erp err ers es- esa esb ese esf esl eso esp esr ess faa fab fae faf fal fao fap far fas fba fbb fbe fbf fbl fbo fbp fbr fbs fea feb fee fef fel feo fep fer fes ffa ffe fff ffl ffo ffp ffr ffs fla flb fle flf fll flo flp flr fls foa fob foe fof fol foo fop for fos fpa fpb fpe fpl fpo fpp fpr fps fra frb fre frf frl fro frp frr frs fsa fsb fse fsf fsl fso fsp fsr fss l-p la- laa lab lae laf lal lao lap lar las lba lbb lbe lbf lbl lbo lbp lbr lbs lea leb lee lef lel leo lep ler les lfa lfb lfe lff lfl lfo lfp lfr lfs lla llb lle llf lll llo llp llr lls loa lob loe lof lol loo lop lor los lpa lpb lpe lpf lpl lpo lpp lpr lps lra lrb lrf lro lrp lrr lrs lsa lsb lse lsf lsl lso lsp lsr lss oaa oab oae oaf oal oao oap oar oas ob- oba obb obe obf obl obo obp obr obs oea oeb oee oef oel oeo oep oer oes of- ofa ofb ofe off ofl ofo ofp ofr ofs ola olb ole olf oll olo olp ols oo- ooa oob oof ool ooo oop oor oos op- opa opb ope opf opl opo opp opr ops or- ora orb ore orf orl oro orp orr ors os- osa osb ose osf osl oso osp osr oss p-p paa pab pae paf pal pao pap par pas pba pbb pbe pbf pbl pbo pbp pbr pbs pea peb pee pef pel peo pep per pes pfa pfb pfe pff pfl pfo pfp pfr pfs pla plb ple plf pll plo plp plr pls poa pob poe pof pol poo pop por pos ppa ppb ppe ppf ppl ppo ppp ppr pps pra prb pre prf prl pro prp prr prs ps- psa psb pse psf psl pso psp psr pss ra- raa rab rae raf ral rao rap rar ras rba rbb rbe rbf rbl rbo rbp rbr rbs re- rea reb ree ref rel reo rep rer res rfa rfb rfe rff rfl rfo rfp rfr rfs rla rle rlf rll rlo rlp rlr rls roa rob roe rof rol roo rop ror ros rpa rpb rpe rpf rpl rpo rpp rpr rps rra rrb rrf rrl rrp rrr rrs rsa rsb rse rsf rsl rso rsp rsr rss saa sab sae saf sal sao sap sar sas sba sbb sbe sbf sbl sbo sbp sbr sbs se- sea seb see sef sel seo sep ser ses sfa sfb sfe sff sfl sfo sfp sfr sfs sla slb sle slf sll slo slp slr sls soa sob soe sof sol soo sop sor sos spa spb spe spf spl spo spp spr sps sr- sra srb sre srf srl sro srp srr srs ss- ssa ssb sse ssf ssl sso ssp ssr sss