-al a-a a-c aaa aac aaf aak aal ac- aca acc acf ack acl af- afa afc aff afk afl aka akc akk akl al- ala alc alf alk all c-- caa cac caf cak cal cca ccc ccf cck ccl cfa cfc cff cfk cfl cka ckc cl- cla clc clf clk cll faa fac faf fak fal fca fcc fcf fck fcl ffa ffc fff ffk ffl fka fkc fkf fkk fkl fla flc flf fll ka- kaa kac kaf kak kal kca kcc kck kcl kfa kfc kff kkc kkk kkl kl- kla klc klf la- laa lac laf lak lal lca lcc lcf lck lcl lfa lfc lff lfk lfl lka lkl lla llc llf llk lll