c-- ccc cce cck ccl ccm ccs ccu ce- cec cee cek cel cem ces ceu ckc ckm cks cl- clc cle clk cll clm cls clu cmc cme cmk cml cmm cms cmu csc cse csk csl csm css csu cuc cue cuk cul cum cus cuu ec- ecc ece eck ecl ecm ecs ecu eec eee eek eel eem ees ekc eke ekl eks eku elc ele elk ell elm els elu em- emc eme emk eml emm ems emu es- esc ese esk esl esm ess esu eu- euc eue eul eus kcc kce kck kcl kcm kcs kcu ke- kec kee kek kel kem kes kkc kke kkk kkl kkm kks kku kl- klc klm kls klu kmc kme kmk kml kmm kms kmu ksc kse ksk ksl ksm kss ksu kuc kue kuk kul kum kus kuu lcc lce lck lcl lcm lcs lcu lec lee lek lel lem les leu lkl lks llc lle llk lll llm lls llu lmc lme lmk lml lmm lms lmu lsc lse lsk lsl lsm lss lsu luc lue luk lul lum lus luu mc- mcc mce mck mcl mcm mcs mcu mec mee mek mel mem mes meu mkc mke mkk mkl mkm mks mku mlc mle mlk mll mlm mls mlu mmc mme mmk mml mmm mms mmu msc mse msk msl msm mss msu muc mue muk mul mum mus muu scc sce sck scl scm scs scu se- sec see sek sel sem ses seu sk- skc ske skk skl skm sks sku slc sle slk sll slm sls slu smc sme smk sml smm sms smu ss- ssc sse ssk ssl ssm sss ssu suc sue suk sul sum sus suu ucc uce uck ucl ucm ucs ucu uec uee uel uem ues ukc uke ukk ukl uku ulc ule ulk ull ulm uls ulu um- umc ume uml umm ums umu usc use usk usl usm uss usu uuc uue uum uus uuu