-al -ol a-a a-b aaa aab aak aal aao aap aar aas ab- aba abb abk abl abo abp abr abs aka akb akk akl ako akp akr aks al- ala alb alk all alo alp alr als aoa aob aok aol aoo aop aor aos ap- apa apb apk apl apo app apr aps ar- ara arb ark arl aro arp arr ars as- asa asb ask asl aso asp asr ass b-p baa bab bak bal bao bap bar bas bba bbb bbk bbl bbo bbp bbr bbs bka bkb bkk bkl bko bkp bkr bks bla blb blk bll blo blp blr bls boa bob bok bol boo bop bor bos bpa bpb bpl bpo bpp bpr bps bra brb brk brl bro brp brr brs bsa bsb bsk bsl bso bsp bsr bss ka- kaa kab kak kal kao kap kar kas kba kbb kbk kbl kbo kbp kbr kbs kkb kkk kkl kkp kkr kks kl- kla klb klo klr kls koa kob kok kol koo kop kor kos kpa kpk kpl kpo kpp kpr kps kra krk krl kro krp krr krs ksa ksb ksk ksl kso ksp ksr kss l-p la- laa lab lak lal lao lap lar las lba lbb lbk lbl lbo lbp lbr lbs lka lkb lkl lkp lkr lks lla llb llk lll llo llp llr lls loa lob lok lol loo lop lor los lpa lpb lpk lpl lpo lpp lpr lps lra lrb lrk lro lrp lrr lrs lsa lsb lsk lsl lso lsp lsr lss oaa oab oak oal oao oap oar oas ob- oba obb obk obl obo obp obr obs oka okb okk okl oko okp okr oks ola olb olk oll olo olp ols oo- ooa oob ook ool ooo oop oor oos op- opa opb opk opl opo opp opr ops or- ora orb ork orl oro orp orr ors os- osa osb osk osl oso osp osr oss p-p paa pab pak pal pao pap par pas pba pbb pbk pbl pbo pbp pbr pbs pka pkb pkl pko pkp pkr pks pla plb plk pll plo plp plr pls poa pob pok pol poo pop por pos ppa ppb ppk ppl ppo ppp ppr pps pra prb prk prl pro prp prr prs ps- psa psb psk psl pso psp psr pss ra- raa rab rak ral rao rap rar ras rba rbb rbk rbl rbo rbp rbr rbs rkb rkk rko rkp rks rla rll rlo rlp rlr rls roa rob rok rol roo rop ror ros rpa rpb rpk rpl rpo rpp rpr rps rra rrb rrk rrl rrp rrr rrs rsa rsb rsk rsl rso rsp rsr rss saa sab sak sal sao sap sar sas sba sbb sbk sbl sbo sbp sbr sbs sk- ska skb skk skl sko skp skr sks sla slb slk sll slo slp slr sls soa sob sok sol soo sop sor sos spa spb spk spl spo spp spr sps sr- sra srb srk srl sro srp srr srs ss- ssa ssb ssk ssl sso ssp ssr sss