-al -er -ol a-a a-b aaa aab aae aal aao aap aar aas ab- aba abb abe abl abo abp abr abs aea aeb aee ael aeo aep aer aes al- ala alb ale all alo alp alr als aoa aob aoe aol aoo aop aor aos ap- apa apb ape apl apo app apr aps ar- ara arb are arl aro arp arr ars as- asa asb ase asl aso asp asr ass b-p baa bab bae bal bao bap bar bas bba bbb bbe bbl bbo bbp bbr bbs be- bea beb bee bel beo bep ber bes bla blb ble bll blo blp blr bls boa bob boe bol boo bop bor bos bpa bpb bpe bpl bpo bpp bpr bps bra brb bre brl bro brp brr brs bsa bsb bse bsl bso bsp bsr bss eaa eab eae eal eao eap ear eas eba ebb ebe ebl ebo ebp ebr ebs eea eeb eee eel eeo eep eer ees ela elb ele ell elo elp elr els eo- eoa eob eoe eol eoo eop eor eos ep- epa epb epe epl epo epp epr eps era erb ere erl ero erp err ers es- esa esb ese esl eso esp esr ess l-p la- laa lab lae lal lao lap lar las lba lbb lbe lbl lbo lbp lbr lbs lea leb lee lel leo lep ler les lla llb lle lll llo llp llr lls loa lob loe lol loo lop lor los lpa lpb lpe lpl lpo lpp lpr lps lra lrb lro lrp lrr lrs lsa lsb lse lsl lso lsp lsr lss oaa oab oae oal oao oap oar oas ob- oba obb obe obl obo obp obr obs oea oeb oee oel oeo oep oer oes ola olb ole oll olo olp ols oo- ooa oob ool ooo oop oor oos op- opa opb ope opl opo opp opr ops or- ora orb ore orl oro orp orr ors os- osa osb ose osl oso osp osr oss p-p paa pab pae pal pao pap par pas pba pbb pbe pbl pbo pbp pbr pbs pea peb pee pel peo pep per pes pla plb ple pll plo plp plr pls poa pob poe pol poo pop por pos ppa ppb ppe ppl ppo ppp ppr pps pra prb pre prl pro prp prr prs ps- psa psb pse psl pso psp psr pss ra- raa rab rae ral rao rap rar ras rba rbb rbe rbl rbo rbp rbr rbs re- rea reb ree rel reo rep rer res rla rle rll rlo rlp rlr rls roa rob roe rol roo rop ror ros rpa rpb rpe rpl rpo rpp rpr rps rra rrb rrl rrp rrr rrs rsa rsb rse rsl rso rsp rsr rss saa sab sae sal sao sap sar sas sba sbb sbe sbl sbo sbp sbr sbs se- sea seb see sel seo sep ser ses sla slb sle sll slo slp slr sls soa sob soe sol soo sop sor sos spa spb spe spl spo spp spr sps sr- sra srb sre srl sro srp srr srs ss- ssa ssb sse ssl sso ssp ssr sss