-al -ol a-a a-c aaa aac aak aal aao aar aav ac- aca acc ack acl aco acr acv aka akc akk akl ako akr akv al- ala alc alk all alo alr alv aoa aoc aok aol aoo aor aov ar- ara arc ark arl aro arr arv av- ava avc avk avl avo avr c-- caa cac cak cal cao car cav cca ccc cck ccl cco ccr ccv cka ckc cko cl- cla clc clk cll clo clr clv co- coa coc cok col coo cor cov cra crc crk crl cro crr crv cva cvc cvk cvl cvo cvr cvv ka- kaa kac kak kal kao kar kav kca kcc kck kcl kcr kkc kkk kkl kkr kkv kl- kla klc klo klr klv koa koc kok kol koo kor kra krc krk krl kro krr krv kva kvk kvo kvr kvv la- laa lac lak lal lao lar lav lca lcc lck lcl lco lcr lcv lka lkl lkr lla llc llk lll llo llr llv loa loc lok lol loo lor lov lra lrc lrk lro lrr lrv lva lvc lvl lvr lvv oaa oac oak oal oao oar oav oc- oca occ ock ocl oco ocr ocv oka okc okk okl oko okr ola olc olk oll olo oo- ooa ooc ook ool ooo oor oov or- ora orc ork orl oro orr orv ov- ova ovc ovl ovo ovv ra- raa rac rak ral rao rar rav rca rcc rcl rco rcr rcv rkc rkk rko rkv rla rlc rll rlo rlr roa roc rok rol roo ror rov rra rrc rrk rrl rrr rva rvc rvl rvo rvr rvv v-a vaa vac vak val vao var vav vca vcc vcl vco vcr vka vl- vla vlc vlk vll vlo vlv voa voc vok vol voo vor vov vra vrc vrk vrr vva vvc vvo vvr vvv