-al -ol a-a aaa aaf aak aal aao aar aas aav af- afa aff afk afl afo afr afs afv aka akk akl ako akr aks akv al- ala alf alk all alo alr als alv aoa aof aok aol aoo aor aos aov ar- ara arf ark arl aro arr ars arv as- asa asf ask asl aso asr ass asv av- ava avf avk avl avo avr avs faa faf fak fal fao far fas fav ffa fff ffk ffl ffo ffr ffs ffv fka fkf fkk fkl fla flf fll flo flr fls foa fof fok fol foo for fos fra frf frk frl fro frr frs fsa fsf fsk fsl fso fsr fss fsv fva fvk ka- kaa kaf kak kal kao kar kas kav kfa kff kfo kfs kkk kkl kkr kks kkv kl- kla klf klo klr kls klv koa kof kok kol koo kor kos kra krf krk krl kro krr krs krv ksa ksf ksk ksl kso ksr kss ksv kva kvk kvo kvr kvs kvv la- laa laf lak lal lao lar las lav lfa lff lfk lfl lfo lfr lfs lka lkl lkr lks lla llf llk lll llo llr lls llv loa lof lok lol loo lor los lov lra lrf lrk lro lrr lrs lrv lsa lsf lsk lsl lso lsr lss lsv lva lvf lvl lvr lvs lvv oaa oaf oak oal oao oar oas oav of- ofa off ofl ofo ofr ofs ofv oka okk okl oko okr oks ola olf olk oll olo ols oo- ooa oof ook ool ooo oor oos oov or- ora orf ork orl oro orr ors orv os- osa osf osk osl oso osr oss osv ov- ova ovf ovl ovo ovs ovv ra- raa raf rak ral rao rar ras rav rfa rff rfk rfl rfo rfr rfs rfv rkf rkk rko rks rkv rla rlf rll rlo rlr rls roa rof rok rol roo ror ros rov rra rrf rrk rrl rrr rrs rsa rsf rsk rsl rso rsr rss rsv rva rvf rvl rvo rvr rvs rvv saa saf sak sal sao sar sas sav sfa sff sfk sfl sfo sfr sfs sfv sk- ska skf skk skl sko skr sks sla slf slk sll slo slr sls slv soa sof sok sol soo sor sos sov sr- sra srf srk srl sro srr srs srv ss- ssa ssf ssk ssl sso ssr sss ssv sva svf svk svl svo svr svs svv v-a vaa vak val vao var vas vav vfa vff vfl vfr vfs vfv vka vl- vla vlf vlk vll vlo vls vlv voa vof vok vol voo vor vos vov vra vrf vrk vrr vrs vsa vsf vsk vsl vso vsr vss vsv vva vvo vvr vvs vvv