fytre yftre ftyre tfyre ytfre tyfre fyrte yfrte fryte rfyte yrfte ryfte ftrye tfrye frtye rftye trfye rtfye ytrfe tyrfe yrtfe rytfe tryfe rtyfe fyter yfter ftyer tfyer ytfer tyfer fyetr yfetr feytr efytr yeftr eyftr fteyr tfeyr fetyr eftyr tefyr etfyr ytefr tyefr yetfr eytfr teyfr etyfr fyret yfret fryet rfyet yrfet ryfet fyert yfert feyrt efyrt yefrt eyfrt freyt rfeyt feryt efryt refyt erfyt yreft ryeft yerft eyrft reyft eryft ftrey tfrey frtey rftey trfey rtfey ftery tfery fetry eftry tefry etfry frety rfety ferty efrty refty erfty trefy rtefy terfy etrfy retfy ertfy ytref tyref yrtef rytef tryef rtyef yterf tyerf yetrf eytrf teyrf etyrf yretf ryetf yertf eyrtf reytf erytf treyf rteyf teryf etryf retyf ertyf
Note: these 'words' (valid or invalid) are all the permutations of the word fytre. These words are obtained by scrambling the letters in fytre.