cccc ccci ccee ccic ccii ccir ccix ccrc ccre ccri ccrt cctc cctt ccxi cec- cece ceci cect ceec cer- cerc cere ceri cert cet- cete ceti cexe cicc cici cicr cict ciee cier ciii ciit circ cire ciri cirr cirt cite citi citt cixi crcc crce crcr cre- crec cree crei cret crex cric crie crit crrt crtc ctec ctic ctrc cxii cxix cxxi cxxx eccc ecce ecci ecct ecit ecrc ecri ecrr ect- ectc eeee eerc eetc eete eext eiec eiei eier eire eitc eiti eitr er-x ercc erce erec erei erer eret eric erie erit errc erre etcc etec etee eter etic etix etre ette etti exec exer exit exrx exte extr iccc icci iccr icct icec icee icer icet icex icrc icre icrr icrt iecc ieet ieie iere ieri iett iiie iiii iiit iirc iitr iitt ircc ircx iree irer irex iri- iric irie irix irrc irre irri irte irti itec iter itet itex itic itie itri ixxi rccc rcet rcic rctc rcti recc rece reci recr rect reet reii reir reit rere reri rert rete reti retr rett rexx ricc rice rict rier riet riex rire riri rite riti ritt rixc rixe rrrr rtcc rtce rtee rtei rtex tccc tctc tecr tect teec teer teet teic teie teir ter- terc tere teri terr tete teti tetr tett tetx text ticc tice tie- tiee tiei tier tiet tiit tire tiri tirr titc tite titi titt tixt trcc tre- trec tree trei tret trex tri- tric trie trit trix trtc trte trtr tter tttt txii txtr xcii xcri xeer xer- xert xexe xiii xixi xtie xxii xxix xxxi xxxx