-al -ol a-a aaa aaf aak aal aao aar aav af- afa aff afk afl afo afr afv aka akk akl ako akr akv al- ala alf alk all alo alr alv aoa aof aok aol aoo aor aov ar- ara arf ark arl aro arr arv av- ava avf avk avl avo avr faa faf fak fal fao far fav ffa fff ffk ffl ffo ffr ffv fka fkf fkk fkl fla flf fll flo flr foa fof fok fol foo for fra frf frk frl fro frr fva fvk ka- kaa kaf kak kal kao kar kav kfa kff kfo kkk kkl kkr kkv kl- kla klf klo klr klv koa kof kok kol koo kor kra krf krk krl kro krr krv kva kvk kvo kvr kvv la- laa laf lak lal lao lar lav lfa lff lfk lfl lfo lfr lka lkl lkr lla llf llk lll llo llr llv loa lof lok lol loo lor lov lra lrf lrk lro lrr lrv lva lvf lvl lvr lvv oaa oaf oak oal oao oar oav of- ofa off ofl ofo ofr ofv oka okk okl oko okr ola olf olk oll olo oo- ooa oof ook ool ooo oor oov or- ora orf ork orl oro orr orv ov- ova ovf ovl ovo ovv ra- raa raf rak ral rao rar rav rfa rff rfk rfl rfo rfr rfv rkf rkk rko rkv rla rlf rll rlo rlr roa rof rok rol roo ror rov rra rrf rrk rrl rrr rva rvf rvl rvo rvr rvv v-a vaa vak val vao var vav vfa vff vfl vfr vfv vka vl- vla vlf vlk vll vlo vlv voa vof vok vol voo vor vov vra vrf vrk vrr vva vvo vvr vvv