triad rtiad tirad itrad ritad irtad traid rtaid tarid atrid ratid artid tiard itard taird atird iatrd aitrd riatd iratd raitd aritd iartd airtd trida rtida tirda itrda ritda irtda trdia rtdia tdria dtria rdtia drtia tidra itdra tdira dtira idtra ditra ridta irdta rdita drita idrta dirta tradi rtadi tardi atrdi ratdi artdi trdai rtdai tdrai dtrai rdtai drtai tadri atdri tdari dtari adtri datri radti ardti rdati drati adrti darti tiadr itadr taidr atidr iatdr aitdr tidar itdar tdiar dtiar idtar ditar tadir atdir tdair dtair adtir datir iadtr aidtr idatr diatr aditr daitr riadt iradt raidt aridt iardt airdt ridat irdat rdiat driat idrat dirat radit ardit rdait drait adrit darit iadrt aidrt idart diart adirt dairt
Note: these 'words' (valid or invalid) are all the permutations of the word triad. These words are obtained by scrambling the letters in triad.