-al -ol a-a a-c aaa aac aaf aak aal aao ac- aca acc acf ack acl aco af- afa afc aff afk afl afo aka akc akk akl ako al- ala alc alf alk all alo aoa aoc aof aok aol aoo c-- caa cac caf cak cal cao cca ccc ccf cck ccl cco cfa cfc cff cfk cfl cfo cka ckc cko cl- cla clc clf clk cll clo co- coa coc cof cok col coo faa fac faf fak fal fao fca fcc fcf fck fcl fco ffa ffc fff ffk ffl ffo fka fkc fkf fkk fkl fla flc flf fll flo foa foc fof fok fol foo ka- kaa kac kaf kak kal kao kca kcc kck kcl kfa kfc kff kfo kkc kkk kkl kl- kla klc klf klo koa koc kof kok kol koo la- laa lac laf lak lal lao lca lcc lcf lck lcl lco lfa lfc lff lfk lfl lfo lka lkl lla llc llf llk lll llo loa loc lof lok lol loo oaa oac oaf oak oal oao oc- oca occ ocf ock ocl oco of- ofa ofc off ofl ofo oka okc okk okl oko ola olc olf olk oll olo oo- ooa ooc oof ook ool ooo