thrae htrae trhae rthae hrtae rhtae thare htare tahre athre hatre ahtre trahe rtahe tarhe atrhe rathe arthe hrate rhate harte ahrte rahte arhte threa htrea trhea rthea hrtea rhtea thera htera tehra ethra hetra ehtra treha rteha terha etrha retha ertha hreta rheta herta ehrta rehta erhta thaer htaer taher ather hater ahter thear htear tehar ethar hetar ehtar taehr atehr teahr etahr aethr eathr haetr ahetr heatr ehatr aehtr eahtr traeh rtaeh tareh atreh rateh arteh treah rteah terah etrah retah ertah taerh aterh tearh etarh aetrh eatrh raeth areth reath erath aerth earth hraet rhaet haret ahret rahet arhet hreat rheat herat ehrat rehat erhat haert ahert heart ehart aehrt eahrt raeht areht reaht eraht aerht earht
Note: these 'words' (valid or invalid) are all the permutations of the word thrae. These words are obtained by scrambling the letters in thrae.