-er -ey c-- ccc cce cco ccr ccs ccz ce- cec cee ceo cer ces cey cez co- coc coe coo cor cos coy coz crc cre cro crr crs cry crz csc cse cso csr css csy csz cyc cye cyo cyr cys cz- czc cze czo ec- ecc ece eco ecr ecs eec eee eeo eer ees eey eo- eoc eoe eoo eor eos erc ere ero err ers ery erz es- esc ese eso esr ess esy eyc eye eyo eyr eys eze ezo ezr ezs ezz oc- occ oco ocr ocs ocz oec oee oeo oer oes oey oo- ooc ooo oor oos or- orc ore oro orr ors ory orz os- osc ose oso osr oss oye oyo oys oze ozo ozs ozz rcc rce rco rcr rcs re- rec ree reo rer res rey rez roc roe roo ror ros roy roz rrc rrr rrs rsc rse rso rsr rss ry- ryc rye ryo ryr rys ryy ryz rze rzo rzy scc sce sco scr scs se- sec see seo ser ses sey sez soc soe soo sor sos soy soz sr- src sre sro srr srs sry ss- ssc sse sso ssr sss ssz sy- syc sye syr sys sze szr ycc yce yco ycs ycy yec yee yeo yer yes yey yez yoc yoe yoo yor yos yoy yrc yre yro yrs ysc yse yso ysr yss ysy ysz yyc yye yys yyy yyz yzr yzy zce zco zcs zec zee zeo zer zes zez zo- zoc zoe zoo zor zos zro zrs zse zsz zzr zzs zzy zzz