-al -ol a-a a-b aaa aab aae aal aao aap aas ab- aba abb abe abl abo abp abs aea aeb aee ael aeo aep aes al- ala alb ale all alo alp als aoa aob aoe aol aoo aop aos ap- apa apb ape apl apo app aps as- asa asb ase asl aso asp ass b-p baa bab bae bal bao bap bas bba bbb bbe bbl bbo bbp bbs be- bea beb bee bel beo bep bes bla blb ble bll blo blp bls boa bob boe bol boo bop bos bpa bpb bpe bpl bpo bpp bps bsa bsb bse bsl bso bsp bss eaa eab eae eal eao eap eas eba ebb ebe ebl ebo ebp ebs eea eeb eee eel eeo eep ees ela elb ele ell elo elp els eo- eoa eob eoe eol eoo eop eos ep- epa epb epe epl epo epp eps es- esa esb ese esl eso esp ess l-p la- laa lab lae lal lao lap las lba lbb lbe lbl lbo lbp lbs lea leb lee lel leo lep les lla llb lle lll llo llp lls loa lob loe lol loo lop los lpa lpb lpe lpl lpo lpp lps lsa lsb lse lsl lso lsp lss oaa oab oae oal oao oap oas ob- oba obb obe obl obo obp obs oea oeb oee oel oeo oep oes ola olb ole oll olo olp ols oo- ooa oob ool ooo oop oos op- opa opb ope opl opo opp ops os- osa osb ose osl oso osp oss p-p paa pab pae pal pao pap pas pba pbb pbe pbl pbo pbp pbs pea peb pee pel peo pep pes pla plb ple pll plo plp pls poa pob poe pol poo pop pos ppa ppb ppe ppl ppo ppp pps ps- psa psb pse psl pso psp pss saa sab sae sal sao sap sas sba sbb sbe sbl sbo sbp sbs se- sea seb see sel seo sep ses sla slb sle sll slo slp sls soa sob soe sol soo sop sos spa spb spe spl spo spp sps ss- ssa ssb sse ssl sso ssp sss