c-- ccc cce cck ccl ccm ccu ce- cec cee cek cel cem ceu ckc ckm cl- clc cle clk cll clm clu cmc cme cmk cml cmm cmu cuc cue cuk cul cum cuu ec- ecc ece eck ecl ecm ecu eec eee eek eel eem ekc eke ekl eku elc ele elk ell elm elu em- emc eme emk eml emm emu eu- euc eue eul kcc kce kck kcl kcm kcu ke- kec kee kek kel kem kkc kke kkk kkl kkm kku kl- klc klm klu kmc kme kmk kml kmm kmu kuc kue kuk kul kum kuu lcc lce lck lcl lcm lcu lec lee lek lel lem leu lkl llc lle llk lll llm llu lmc lme lmk lml lmm lmu luc lue luk lul lum luu mc- mcc mce mck mcl mcm mcu mec mee mek mel mem meu mkc mke mkk mkl mkm mku mlc mle mlk mll mlm mlu mmc mme mmk mml mmm mmu muc mue muk mul mum muu ucc uce uck ucl ucm ucu uec uee uel uem ukc uke ukk ukl uku ulc ule ulk ull ulm ulu um- umc ume uml umm umu uuc uue uum uuu