eerier effeir effere effete efreet efter- eifert einini eirene eittin enfete enfief enfire enfree enteer entent enter- entere entete entier entine entire entre- entree entrer er-rif erenet eritne ernee errett eterne feerie feiern feifer feiner feinne feirie fenite fenner fennin fenrir fentin ferfer ferier ferine ferner fernet fernie ferren ferrer ferret ferri- ferrie ferrin fertee ferter fetter fiefie fierte fiftie fineer finiff finite finnen finner finnie finnif firein firren firret fitien fitten fitter fittie fittin fittit frefre freire frenne frente freren fretin frette fterer fterie fterre i-free i-tree iferni iffier ifreet inerte infeet infeft inferi infern infine infini infire infitt infree intein inteir intent inter- intere interf intern intier intine intire intrie irenee irieen irrite ittiri neener nefere nefert neinei nerine nerite nerrer netrin netter nettie niente nifene niffer ninein ninite nintin nitent nittei nitten nitter r-tree reefer reeffe refeet refeff refert refete refine refire refnet refrei refret refter reiner reinet reinin reiter renier renite renner rennet rennie rennin rennit renren rentee renter rerent rerrin reteer reteet retene retent retere retief retin- retint retire retree retret retter rieter riette rietti riffer riffin rififi rifter rin-ne rinner rinnet rintin ritini rititi ritten ritter t-tree teener teenie teetee teeter teirei teneni tenent tenii- tenite tenner tennet tennie tennin tenri tenten tenter tentie tentif tereen terene terete terner ternin terren terrer terret terrie terrif terrin territ terter tertre tetete tetine tetter tie-in tiefer tienen tienet tienie tienne tierer tieret tiete tietie tiff-f tiffen tiffin tinier tinnen tinner tinnet tinnie tinter tintie tintin tintri tirret tirrit titfer titini titiri tittee titter tittie tntnet treene treete trefet trefte treife trenet trenin trenne trente trenti tretee tretie trette triene trient trifet trinet trinte triter ttrent