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