-al -ol a-a a-c aaa aac aak aal aao aar ac- aca acc ack acl aco acr aka akc akk akl ako akr al- ala alc alk all alo alr aoa aoc aok aol aoo aor ar- ara arc ark arl aro arr c-- caa cac cak cal cao car cca ccc cck ccl cco ccr cka ckc cko cl- cla clc clk cll clo clr co- coa coc cok col coo cor cra crc crk crl cro crr ka- kaa kac kak kal kao kar kca kcc kck kcl kcr kkc kkk kkl kkr kl- kla klc klo klr koa koc kok kol koo kor kra krc krk krl kro krr la- laa lac lak lal lao lar lca lcc lck lcl lco lcr lka lkl lkr lla llc llk lll llo llr loa loc lok lol loo lor lra lrc lrk lro lrr oaa oac oak oal oao oar oc- oca occ ock ocl oco ocr oka okc okk okl oko okr ola olc olk oll olo oo- ooa ooc ook ool ooo oor or- ora orc ork orl oro orr ra- raa rac rak ral rao rar rca rcc rcl rco rcr rkc rkk rko rla rlc rll rlo rlr roa roc rok rol roo ror rra rrc rrk rrl rrr