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