cccc cccf ccee ccfc ccff ccoc ccrc ccre ccrf ccrt cctc cctt cec- cece ceco cect ceec cef- cefc ceor cer- cerc cere cerf cero cert cet- cete ceto cfcf cfco cffr cfor cfre cfrt cftc cfte cftr coce coco coct cofc cofe coff coft coof coot cor- corc core corf coro corr cort cotc cote coto cott crcc crce crcr cre- crec cree creo cret crfc croc croe croo cror crot crrt crtc crtf ctcf ctec ctfc ctfo ctor ctot ctrc eccc ecce ecco ecct ecef ecfc ecfr eco- ecot ecrc ecrf ecrr ect- ectc ectf ecto eeee eefe eeoc eerc eero eetc eete efco efeo efet efor eft- eore eotc eoto ercc erce erec erer eret erfc erft eroc eroe eroo errc erre erro etcc etco etec etee eter etfc etfe etoe etre etro ette etto fccf fcot fcto fece fect feer feet fefc fefe feff fefo feof ferc fere fero ferr fert fete fetr fett ffcc ffee ffff ffrr fftf foce foco foer fofo foof foot for- fore foro forr fort fote foto fott frcc free freo fret frfc froe frot ft-c fter ftfc o-eo occc occt oce ocee ocef ocet ocre ocro ocrr oct- octe octo oec- oecc oeec oere ofcr ofer off- offc offe offo offr ofor ofre oocr ooer ooff oooo oore oort orce orco ore- orec oreo orer orfe orff oro- oroe orof oror orot orro ortc orte orto otee oter otfc oto- otoe otof otoo otor otre otro otte otto rccc rcet rcfc rctc recc rece recr rect reef reet refe reff refr reft reof reot rere rero rert rete reto retr rett rfef rffc rftc rocc roce roco roer roet rofc rofe roff rofo roof roor root rorc rore roro rort rotc rote roto rotr rott rrfc rrrr rtcc rtce rtee rtfc tccc tcfc tctc teco tecr tect teec teef teer teet tefc teff teft teor ter- terc tere terf tero terr tete teto tetr tett tfec tfot tftc toce toco toee toer toet toff tofo toft toof toor toot torc tore torf toro torr tort totc tote toto totr tott trcc tre- trec tree tref treo tret trfc trfr troc troe troo trot trtc trte trtr tteo tter ttfc ttff ttoe tttt