-al -ol a-a a-b aaa aab aaf aaj aak aal aao aar aas ab- aba abb abf abj abk abl abo abr abs af- afa afb aff afj afk afl afo afr afs aja ajb ajf ajj ajk ajl ajo ajr ajs aka akb akj akk akl ako akr aks al- ala alb alf alj alk all alo alr als aoa aob aof aoj aok aol aoo aor aos ar- ara arb arf arj ark arl aro arr ars as- asa asb asf asj ask asl aso asr ass baa bab baf baj bak bal bao bar bas bba bbb bbf bbk bbl bbo bbr bbs bfa bfb bff bfj bfl bfo bfr bfs bja bjf bjj bjk bjr bjs bka bkb bkf bkk bkl bko bkr bks bla blb blf blj blk bll blo blr bls boa bob bof boj bok bol boo bor bos bra brb brf brj brk brl bro brr brs bsa bsb bsf bsj bsk bsl bso bsr bss faa fab faf faj fak fal fao far fas fba fbb fbf fbk fbl fbo fbr fbs ffa fff ffk ffl ffo ffr ffs fja fjb fjs fka fkb fkf fkj fkk fkl fla flb flf fll flo flr fls foa fob fof fok fol foo for fos fra frb frf frj frk frl fro frr frs fsa fsb fsf fsj fsk fsl fso fsr fss jaa jab jaf jaj jak jal jao jar jas jba jbf jbj jbk jbl jbo jbr jbs jfa jfb jff jfj jfk jfl jfo jfr jfs jja jjb jjf jjj jjk jjl jjr jjs jka jkb jkk jkl jko jkr jks jla jlb jlf jll jlo jlr jls joa job jof joj jok jol joo jor jos jra jrb jrf jrk jrl jro jrr jrs jsa jsb jsf jsj jsk jsl jso jsr jss ka- kaa kab kaf kaj kak kal kao kar kas kba kbb kbf kbk kbl kbo kbr kbs kfa kff kfo kfs kjb kjr kjs kkb kkk kkl kkr kks kl- kla klb klf klo klr kls koa kob kof kok kol koo kor kos kra krf krk krl kro krr krs ksa ksb ksf ksk ksl kso ksr kss la- laa lab laf laj lak lal lao lar las lba lbb lbf lbj lbk lbl lbo lbr lbs lfa lfb lff lfk lfl lfo lfr lfs ljf ljj ljs lka lkb lkl lkr lks lla llb llf llj llk lll llo llr lls loa lob lof loj lok lol loo lor los lra lrb lrf lrk lro lrr lrs lsa lsb lsf lsj lsk lsl lso lsr lss oaa oab oaf oaj oak oal oao oar oas ob- oba obb obf obj obk obl obo obr obs of- ofa ofb off ofl ofo ofr ofs oja ojb ojo ojs oka okb okj okk okl oko okr oks ola olb olf olk oll olo ols oo- ooa oob oof ook ool ooo oor oos or- ora orb orf ork orl oro orr ors os- osa osb osf osj osk osl oso osr oss ra- raa rab raf raj rak ral rao rar ras rba rbb rbf rbk rbl rbo rbr rbs rfa rfb rff rfj rfk rfl rfo rfr rfs rja rjf rjk rjr rkb rkf rkk rko rks rla rlf rll rlo rlr rls roa rob rof roj rok rol roo ror ros rra rrb rrf rrk rrl rrr rrs rsa rsb rsf rsj rsk rsl rso rsr rss saa sab saf saj sak sal sao sar sas sba sbb sbf sbj sbk sbl sbo sbr sbs sfa sfb sff sfj sfk sfl sfo sfr sfs sja sjb sjf sjj sjk sjr sjs sk- ska skb skf skj skk skl sko skr sks sla slb slf slj slk sll slo slr sls soa sob sof soj sok sol soo sor sos sr- sra srb srf srj srk srl sro srr srs ss- ssa ssb ssf ssj ssk ssl sso ssr sss