c-- ccc cce ccl ccm ccn ccu ce- cec cee cel cem cen ceu cl- clc cle cll clm cln clu cmc cme cml cmm cmn cmu cn- cnc cne cnl cnm cnn cnu cuc cue cul cum cun cuu ec- ecc ece ecl ecm ecn ecu eec eee eel eem een elc ele ell elm eln elu em- emc eme eml emm emn emu en- enc ene enl enm enn enu eu- euc eue eul eun lcc lce lcl lcm lcn lcu lec lee lel lem len leu llc lle lll llm lln llu lmc lme lml lmm lmn lmu lnc lne lnl lnm lnn lnu luc lue lul lum lun luu mc- mcc mce mcl mcm mcn mcu mec mee mel mem men meu mlc mle mll mlm mln mlu mmc mme mml mmm mmn mmu mnc mne mnl mnm mnn mnu muc mue mul mum mun muu ncc nce ncl ncm ncn ncu ne- nec nee nel nem nen neu nlc nle nll nlm nln nlu nmc nme nml nmm nmn nmu nnc nne nnl nnm nnn nnu nuc nue nul num nun nuu ucc uce ucl ucm ucn ucu uec uee uel uem uen ulc ule ull ulm uln ulu um- umc ume uml umm umn umu un- unc une unl unm unn unu uuc uue uum uun uuu