-er -ey c-- ccc cce ccf cco ccr ccs ccu ce- cec cee cef ceo cer ces ceu cey cfc cfe cff cfo cfr cfs cfu co- coc coe cof coo cor cos cou coy crc cre crf cro crr crs cru cry csc cse csf cso csr css csu csy cuc cue cuf cuo cur cus cuu cuy cyc cye cyf cyo cyr cys ec- ecc ece ecf eco ecr ecs ecu eec eee eef eeo eer ees eey ef- efc efe eff efo efr efs eo- eoc eoe eof eoo eor eos eou erc ere erf ero err ers eru ery es- esc ese esf eso esr ess esu esy eu- euc eue euf eur eus eyc eye eyo eyr eys fcc fce fcf fco fcr fcs fcu fcy fec fee fef feo fer fes feu fey ffc ffe fff ffo ffr ffs ffu ffy foc foe fof foo for fos fou foy frc fre frf fro frr frs fru fry fsc fse fsf fso fsr fss fsu fue fuf fuo fur fus fuu fy- fyc fye fyo oc- occ ocf oco ocr ocs ocu oec oee oef oeo oer oes oey of- ofc ofe off ofo ofr ofs ofu oo- ooc oof ooo oor oos or- orc ore orf oro orr ors oru ory os- osc ose osf oso osr oss osu ou- ouc oue ouf ouo our ous oye oyo oys rcc rce rcf rco rcr rcs rcu re- rec ree ref reo rer res reu rey rfc rfe rff rfo rfr rfs rfu roc roe rof roo ror ros rou roy rrc rrf rrr rrs rru rsc rse rsf rso rsr rss rsu ruc rue ruf ruo rur rus ruu ruy ry- ryc rye ryf ryo ryr rys ryu ryy scc sce scf sco scr scs scu se- sec see sef seo ser ses seu sey sfc sfe sff sfo sfr sfs sfu soc soe sof soo sor sos sou soy sr- src sre srf sro srr srs sry ss- ssc sse ssf sso ssr sss ssu suc sue suf suo sur sus suu suy sy- syc sye syr sys syu ucc uce ucf uco ucr ucs ucu uec uee uef uer ues uey ufc ufe uff ufo ufr ufs ufu uoc uoe uoo uor uos ur- urc ure urf uro urr urs uru ury usc use usf uso usr uss usu uuc uue uur uus uuu uyc uyo uys uyu ycc yce ycf yco ycs ycu ycy yec yee yef yeo yer yes yey yfc yfe yff yfr yfs yfu yoc yoe yof yoo yor yos you yoy yrc yre yrf yro yrs yru ysc yse yso ysr yss ysu ysy yue yuo yur yus yuu yuy yyc yye yyf yys yyu yyy