tride rtide tirde itrde ritde irtde trdie rtdie tdrie dtrie rdtie drtie tidre itdre tdire dtire idtre ditre ridte irdte rdite drite idrte dirte tried rtied tired itred rited irted treid rteid terid etrid retid ertid tierd iterd teird etird ietrd eitrd rietd iretd reitd eritd iertd eirtd trdei rtdei tdrei dtrei rdtei drtei tredi rtedi terdi etrdi retdi ertdi tderi dteri tedri etdri detri edtri rdeti dreti redti erdti derti edrti tider itder tdier dtier idter diter tiedr itedr teidr etidr ietdr eitdr tdeir dteir tedir etdir detir edtir idetr dietr iedtr eidtr deitr editr ridet irdet rdiet driet idret diret riedt iredt reidt eridt ierdt eirdt rdeit dreit redit erdit derit edrit idert diert iedrt eidrt deirt edirt
Note: these 'words' (valid or invalid) are all the permutations of the word tride. These words are obtained by scrambling the letters in tride.