-al a-a a-c aaa aac aae aak aal ac- aca acc ace ack acl aea aec aee aek ael aka akc ake akk akl al- ala alc ale alk all c-- caa cac cae cak cal cca ccc cce cck ccl ce- cea cec cee cek cel cka ckc cl- cla clc cle clk cll eaa eac eae eak eal ec- eca ecc ece eck ecl eea eec eee eek eel eka ekc eke ekl ela elc ele elk ell ka- kaa kac kae kak kal kca kcc kce kck kcl ke- kea kec kee kek kel kkc kke kkk kkl kl- kla klc la- laa lac lae lak lal lca lcc lce lck lcl lea lec lee lek lel lka lkl lla llc lle llk lll