c-- ccc cce cch ccm ccs ccx ce- cec cee ceh cem ces cex ch- chc che chh chm chs chx cmc cme cmh cmm cms cmx csc cse csh csm css csx cxc cxh cxs cxx ec- ecc ece ech ecm ecs ecx eec eee eem ees eex ehc ehe ehh ehm ehs em- emc eme emh emm ems emx es- esc ese esh esm ess esx ex- exc exe exh exs exx hcc hce hch hcm hcs he- hec hee heh hem hes hex hhc hhe hhh hhm hhs hmc hme hmh hmm hms hmx hsc hse hsh hsm hss hsx hxc hxm mc- mcc mce mch mcm mcs mcx mec mee meh mem mes mex mhc mhh mhm mhs mhx mmc mme mmh mmm mms mmx msc mse msh msm mss msx mxc mxs scc sce sch scm scs scx se- sec see seh sem ses sex sh- shc she shh shm shs smc sme smh smm sms smx ss- ssc sse ssh ssm sss ssx sxc sxm sxs xch xcx xee xem xes xex xmc xmh xmm xms xmx xsc xsm xss xxx