-er -ey c-- ccc ccd cce cco ccr ccs ccu ccx cdc cdd cde cdo cdr cds cdu cdx cdy ce- cec ced cee ceo cer ces ceu cex cey co- coc cod coe coo cor cos cou cox coy crc crd cre cro crr crs cru crx cry csc csd cse cso csr css csu csx csy cuc cud cue cuo cur cus cuu cuy cxc cxo cxr cxs cxx cyc cyd cye cyo cyr cys dcc dcd dce dco dcr dcs dcu dcx ddc ddd dde ddo ddr dds ddu ddx ddy de- dec ded dee deo der des deu dex dey doc dod doe doo dor dos dou dox doy drc drd dre dro drr drs dru drx dry dsc dsd dse dso dsr dss dsu dsx dsy duc dud due duo dur dus dux duy dxc dxd dxo dxr dxs dxx dy- dyc dyd dye dyo dyr dys dyu dyy ec- ecc ecd ece eco ecr ecs ecu ecx ed- edc edd ede edo edr eds edu edx edy eec eed eee eeo eer ees eex eey eo- eoc eod eoe eoo eor eos eou erc erd ere ero err ers eru ery es- esc esd ese eso esr ess esu esx esy eu- euc eud eue eur eus eux ex- exc exd exe exo exr exs exu exx exy eyc eyd eye eyo eyr eys oc- occ ocd oco ocr ocs ocu ocx odc odd ode odo odr ods odu oec oed oee oeo oer oes oex oey oo- ooc ood ooo oor oos oox or- orc ord ore oro orr ors oru orx ory os- osc osd ose oso osr oss osu osx ou- ouc oud oue ouo our ous ox- oxc oxo oxx oxy oyd oye oyo oys rcc rcd rce rco rcr rcs rcu rcx rdc rdd rde rdo rdr rds rdu rdx rdy re- rec red ree reo rer res reu rex rey roc rod roe roo ror ros rou rox roy rrc rrd rrr rrs rru rsc rsd rse rso rsr rss rsu rsx ruc rud rue ruo rur rus ruu rux ruy rxr rxs ry- ryc ryd rye ryo ryr rys ryu ryy scc scd sce sco scr scs scu scx sdc sdd sde sdo sdr sds sdu sdy se- sec sed see seo ser ses seu sex sey soc sod soe soo sor sos sou sox soy sr- src srd sre sro srr srs srx sry ss- ssc ssd sse sso ssr sss ssu ssx suc sud sue suo sur sus suu sux suy sxc sxs sxu sy- syc syd sye syr sys syu syx ucc ucd uce uco ucr ucs ucu udc udd ude udo udr uds udu udx uec ued uee uer ues uey uoc uod uoe uoo uor uos uox ur- urc urd ure uro urr urs uru urx ury usc usd use uso usr uss usu usx uuc uue uur uus uuu uxc uxo uxr uxu uyc uyo uys uyu xcd xcr xcx xdc xde xdr xds xed xee xer xes xeu xex xoc xod xoo xor xos xox xrc xrd xrx xry xsc xss xue xus xxo xxx xxy xyr xyy ycc ycd yce yco ycs ycu ycy yde ydo yds ydy yec yed yee yeo yer yes yex yey yoc yod yoe yoo yor yos you yox yoy yrc yre yro yrs yru ysc yse yso ysr yss ysu ysy yud yue yuo yur yus yuu yux yuy yxe yxy yyc yye yys yyu yyy