-er -ey -ic c-- ccc cce cci cco ccr ccs ce- cec cee cei ceo cer ces cey ci- cic cie cii cio cir cis co- coc coe coi coo cor cos coy crc cre cri cro crr crs cry csc cse csi cso csr css csy cyc cye cyo cyr cys ec- ecc ece eci eco ecr ecs eec eee eeo eer ees eey eic eie eii eio eir eis eo- eoc eoe eoi eoo eor eos erc ere eri ero err ers ery es- esc ese esi eso esr ess esy eyc eye eyo eyr eys icc ice ici ico icr ics icy ie- iec iee iei ier ies iey iic iie iii iio iir iis io- ioc ioe ioi ioo ior ios ir- irc ire iri iro irr irs iry is- isc ise isi iso isr iss isy iyc iye iyo iyr iys iyy o-i oc- occ oci oco ocr ocs oec oee oei oeo oer oes oey oic oie oii oio oir ois oo- ooc ooi ooo oor oos or- orc ore ori oro orr ors ory os- osc ose osi oso osr oss oye oyi oyo oys rcc rce rci rco rcr rcs re- rec ree rei reo rer res rey ric rie rii rio rir ris riy roc roe roi roo ror ros roy rrc rri rrr rrs rsc rse rsi rso rsr rss ry- ryc rye ryo ryr rys ryy scc sce sci sco scr scs se- sec see sei seo ser ses sey sic sie sii sio sir sis soc soe soi soo sor sos soy sr- src sre sri sro srr srs sry ss- ssc sse ssi sso ssr sss sy- syc sye syi syr sys ycc yce yci yco ycs ycy yec yee yei yeo yer yes yey yie yii yio yir yis yoc yoe yoi yoo yor yos yoy yrc yre yro yrs ysc yse ysi yso ysr yss ysy yyc yye yys yyy