cccc cccf ccee ccfc ccff ccrc ccre ccrf ccrt cctc cctt cec- cece cect ceec cef- cefc cer- cerc cere cerf cert cet- cete cfcf cffr cfre cfrt cftc cfte cftr crcc crce crcr cre- crec cree cret crfc crrt crtc crtf ctcf ctec ctfc ctrc eccc ecce ecct ecef ecfc ecfr ecrc ecrf ecrr ect- ectc ectf eeee eefe eerc eetc eete efet eft- ercc erce erec erer eret erfc erft errc erre etcc etec etee eter etfc etfe etre ette fccf fece fect feer feet fefc fefe feff ferc fere ferr fert fete fetr fett ffcc ffee ffff ffrr fftf frcc free fret frfc ft-c fter ftfc rccc rcet rcfc rctc recc rece recr rect reef reet refe reff refr reft rere rert rete retr rett rfef rffc rftc rrfc rrrr rtcc rtce rtee rtfc tccc tcfc tctc tecr tect teec teef teer teet tefc teff teft ter- terc tere terf terr tete tetr tett tfec tftc trcc tre- trec tree tref tret trfc trfr trtc trte trtr tter ttfc ttff tttt