mythr ymthr mtyhr tmyhr ytmhr tymhr myhtr ymhtr mhytr hmytr yhmtr hymtr mthyr tmhyr mhtyr hmtyr thmyr htmyr ythmr tyhmr yhtmr hytmr thymr htymr mytrh ymtrh mtyrh tmyrh ytmrh tymrh myrth ymrth mryth rmyth yrmth rymth mtryh tmryh mrtyh rmtyh trmyh rtmyh ytrmh tyrmh yrtmh rytmh trymh rtymh myhrt ymhrt mhyrt hmyrt yhmrt hymrt myrht ymrht mryht rmyht yrmht rymht mhryt hmryt mrhyt rmhyt hrmyt rhmyt yhrmt hyrmt yrhmt ryhmt hrymt rhymt mthry tmhry mhtry hmtry thmry htmry mtrhy tmrhy mrthy rmthy trmhy rtmhy mhrty hmrty mrhty rmhty hrmty rhmty thrmy htrmy trhmy rthmy hrtmy rhtmy ythrm tyhrm yhtrm hytrm thyrm htyrm ytrhm tyrhm yrthm rythm tryhm rtyhm yhrtm hyrtm yrhtm ryhtm hrytm rhytm thrym htrym trhym rthym hrtym rhtym
Note: these 'words' (valid or invalid) are all the permutations of the word mythr. These words are obtained by scrambling the letters in mythr.