c-- ccc cce cck ccl ccu ce- cec cee cek cel ceu ckc cl- clc cle clk cll clu cuc cue cuk cul cuu ec- ecc ece eck ecl ecu eec eee eek eel ekc eke ekl eku elc ele elk ell elu eu- euc eue eul kcc kce kck kcl kcu ke- kec kee kek kel kkc kke kkk kkl kku kl- klc klu kuc kue kuk kul kuu lcc lce lck lcl lcu lec lee lek lel leu lkl llc lle llk lll llu luc lue luk lul luu ucc uce uck ucl ucu uec uee uel ukc uke ukk ukl uku ulc ule ulk ull ulu uuc uue uuu