c-cd cccc cccf cccs ccdc ccdf ccds cced ccee ccfc ccfd ccff ccsd ccsf ccss ccst cctc cctt cd-e cdcs cdec cdef cdes cdfe cdfs cdss cec- cece cecs cect cedd cede cedt ceec cees cef- cefc cesc cese cess cest cet- cete cets cfcf cfcs cfds cfse cftc cfte cscc cscd csce cscf cscs csec csee cset csfc cssd csse cstc cstd csts ctcf ctec ctfc ctfs ctsc ctss ctts dccc dccs dcct dcds dcfc dcfs dcsc dcss dctc dcts dddd ddes ddss ddts dec- decc decd dece decs dect dedd dede deed deef dees deet defe deff defs deft des- desc dese dess dest dete dets dfcc dfcs dfds dfdt dfts dscc dscs dsfc dssc dsst dstc dsts dtcc dted dtfc dtss eccc ecce ecct ecdc ecdf eced ecef eces ecfc ecfs ecsc ecse ecss ect- ectc ectf ects eddc edde edds ede- edes edss edts eecs eede eeee eees eefe eese eetc eete eets efes efet effs eft- efts esce escs esds esee eses eset esfs esse esst estc estd este ests etcc etcs etds etec etee etes etfc etfe ette fccf fcds fces fcsc fcst fdst fdtc fece fect fede feds feed fees feet fefc fefe feff fese fess fest fete fets fett ffcc ffee ffff ffss fftf fscc fsec fssc fssf ft-c ftcd ftfc ftse sccc scce sccs scct scdc scdf scds scec scee scet scfc scfe scsc scsd scst sctc sctd scts sdcc sddc sdds sdef sdes sdet sdfc sdsc sdsf sdss se-c se-d se-e se-f se-s se-t sec- secc secd sece secs sect sede seds seec seed seef sees seet seff seft sesc sese sess sest set- setc sete setf sets sett sfcc sfcs sfdc sffc sfss sfts sscc ssce sscs ssdc ssdd ssdf ssec ssee sses sset ssfc sssc sssf ssss sstc sstd ssts stcc stcs stds stec sted stee stef stes stet stfc stsf stss sttc sttd tccc tcdd tcfc tctc tcts tdes tdff tdse tdss tecs tect tedd tede teds teec teed teef tees teet tefc teff teft tesc tesd tese tess test tete tets tett tfdc tfec tfsd tfss tftc tscc tsec tses tset tsfc tsse tssf tsst tstc tsts ttfc ttff ttss tttt