-er -ey c-- ccc cce cch cco ccr ccs ce- cec cee ceh ceo cer ces cey ch- chc che chh cho chr chs chy co- coc coe coh coo cor cos coy crc cre crh cro crr crs cry csc cse csh cso csr css csy cyc cye cyo cyr cys ec- ecc ece ech eco ecr ecs eec eee eeo eer ees eey ehc ehe ehh eho ehr ehs eo- eoc eoe eoh eoo eor eos erc ere erh ero err ers ery es- esc ese esh eso esr ess esy eyc eye eyo eyr eys hcc hce hch hco hcr hcs hcy he- hec hee heh heo her hes hey hhc hhe hhh hho hhr hhs hhy hoc hoe hoh hoo hor hos hoy hr- hrc hre hrh hro hrr hrs hsc hse hsh hsr hss hsy hy- hyc hye hyh hyo hyr hys hyy oc- occ och oco ocr ocs oec oee oeh oeo oer oes oey ohc ohe ohh oho ohr ohs oo- ooc ooh ooo oor oos or- orc ore orh oro orr ors ory os- osc ose osh oso osr oss oye oyo oys rcc rce rch rco rcr rcs re- rec ree reh reo rer res rey rh- rhc rhe rhh rho rhr rhs roc roe roh roo ror ros roy rrc rrh rrr rrs rsc rse rsh rso rsr rss ry- ryc rye ryo ryr rys ryy scc sce sch sco scr scs se- sec see seh seo ser ses sey sh- shc she shh sho shr shs shy soc soe soh soo sor sos soy sr- src sre srh sro srr srs sry ss- ssc sse ssh sso ssr sss sy- syc sye syh syr sys ycc yce ych yco ycs ycy yec yee yeh yeo yer yes yey yhc yhe yhs yoc yoe yoo yor yos yoy yrc yre yro yrs ysc yse yso ysr yss ysy yyc yye yys yyy