-er c-- ccc cce cch ccm cco ccr ccs ccx ce- cec cee ceh cem ceo cer ces cex ch- chc che chh chm cho chr chs chx cmc cme cmh cmm cmo cmr cms cmx co- coc coe coh com coo cor cos cox crc cre crh crm cro crr crs crx csc cse csh csm cso csr css csx cxc cxh cxo cxr cxs cxx ec- ecc ece ech ecm eco ecr ecs ecx eec eee eem eeo eer ees eex ehc ehe ehh ehm eho ehr ehs em- emc eme emh emm emo emr ems emx eo- eoc eoe eoh eom eoo eor eos erc ere erh erm ero err ers es- esc ese esh esm eso esr ess esx ex- exc exe exh exo exr exs exx hcc hce hch hcm hco hcr hcs he- hec hee heh hem heo her hes hex hhc hhe hhh hhm hho hhr hhs hmc hme hmh hmm hmo hmr hms hmx hoc hoe hoh hom hoo hor hos hox hr- hrc hre hrh hrm hro hrr hrs hsc hse hsh hsm hsr hss hsx hxc hxm m-o m-r mc- mcc mce mch mcm mco mcr mcs mcx mec mee meh mem meo mer mes mex mhc mhh mhm mho mhr mhs mhx mmc mme mmh mmm mmo mmr mms mmx moc moe moh mom moo mor mos mox mrc mre mrh mrm mro mrr mrs mrx msc mse msh msm mso msr mss msx mxc mxr mxs oc- occ och ocm oco ocr ocs ocx oec oee oeh oem oeo oer oes oex ohc ohe ohh ohm oho ohr ohs om- omc ome omh omm omo omr oms omx oo- ooc ooh oom ooo oor oos oox or- orc ore orh orm oro orr ors orx os- osc ose osh osm oso osr oss osx ox- oxc oxo oxx rcc rce rch rcm rco rcr rcs rcx re- rec ree reh rem reo rer res rex rh- rhc rhe rhh rhm rho rhr rhs rmc rme rmh rmm rmo rmr rms rmx roc roe roh rom roo ror ros rox rrc rrh rrm rrr rrs rsc rse rsh rsm rso rsr rss rsx rxr rxs scc sce sch scm sco scr scs scx se- sec see seh sem seo ser ses sex sh- shc she shh shm sho shr shs smc sme smh smm smo smr sms smx soc soe soh som soo sor sos sox sr- src sre srh srm sro srr srs srx ss- ssc sse ssh ssm sso ssr sss ssx sxc sxm sxs xch xcr xcx xee xem xer xes xex xmc xmh xmm xmo xmr xms xmx xoc xom xoo xor xos xox xrc xrx xsc xsm xss xxo xxx