-tree c-tec ccccc cccii ccett cciii ccitt ccxii ceci- cecie cecri ceere ceirt cerc- cerce cerci cerec cerer ceret ceric cerie cerre certe cetic cette cicer cietc circe cirex ciric cirie cirr- cirri citec citee citer citie citr- citte crece creer crete crice crier ctree ctrie cttee ecrit eeeee eerie eetti eirie eiter eitri erect erere erice erier eriic erite erixx erte erter etete etext etite etree etter ettie ex-ic exect execx exert exite exter extre ice-t iceci iceit icici icier icter ictic iecee ieiri ierei iette iiiee iiiii iitti ircii irece irete irite irrit irtec itete itext itire itter ittre ittti rcirc recce recet recit rect- recte recti reece reere reeti reice rere- reree reret reric rerir retee reter retex retie rette rexer ricci ricer rieti ririe rtext rtice t-rex tecic terce teret terex terre terri tert- teter tetex tetr- tetri tette texte ti-ti ticci ticer tieit tiere tieri tiexi tiree tirer tiret tirit titcr titer titii titre titte titti tixte treer treet treie treit treix trere treri trete trett trice triei trier triet trit- trite tritt ttttt xciii xeric xerte xetec xetex xexex xtext xtree xxiii xxxii xxxix