c-- ccc cce cch ccm cco ccs ce- cec cee ceh cem ceo ces ch- chc che chh chm cho chs cmc cme cmh cmm cmo cms co- coc coe coh com coo cos csc cse csh csm cso css ec- ecc ece ech ecm eco ecs eec eee eem eeo ees ehc ehe ehh ehm eho ehs em- emc eme emh emm emo ems eo- eoc eoe eoh eom eoo eos es- esc ese esh esm eso ess hcc hce hch hcm hco hcs he- hec hee heh hem heo hes hhc hhe hhh hhm hho hhs hmc hme hmh hmm hmo hms hoc hoe hoh hom hoo hos hsc hse hsh hsm hss m-o mc- mcc mce mch mcm mco mcs mec mee meh mem meo mes mhc mhh mhm mho mhs mmc mme mmh mmm mmo mms moc moe moh mom moo mos msc mse msh msm mso mss oc- occ och ocm oco ocs oec oee oeh oem oeo oes ohc ohe ohh ohm oho ohs om- omc ome omh omm omo oms oo- ooc ooh oom ooo oos os- osc ose osh osm oso oss scc sce sch scm sco scs se- sec see seh sem seo ses sh- shc she shh shm sho shs smc sme smh smm smo sms soc soe soh som soo sos ss- ssc sse ssh ssm sso sss