c-- ccc cce ccl ccm ccz ce- cec cee cel cem cez cl- clc cle cll clm clz cmc cme cml cmm cz- czc cze czm ec- ecc ece ecl ecm eec eee eel eem elc ele ell elm elz em- emc eme eml emm eze ezz lcc lce lcl lcm lec lee lel lem lez llc lle lll llm llz lmc lme lml lmm mc- mcc mce mcl mcm mcz mec mee mel mem mez mlc mle mll mlm mmc mme mml mmm mmz mzm zce zcl zec zee zel zem zez zmc zmm zzz