triup rtiup tirup itrup ritup irtup truip rtuip turip utrip rutip urtip tiurp iturp tuirp utirp iutrp uitrp riutp irutp ruitp uritp iurtp uirtp tripu rtipu tirpu itrpu ritpu irtpu trpiu rtpiu tpriu ptriu rptiu prtiu tipru itpru tpiru ptiru iptru pitru riptu irptu rpitu pritu iprtu pirtu trupi rtupi turpi utrpi rutpi urtpi trpui rtpui tprui ptrui rptui prtui tupri utpri tpuri pturi uptri putri rupti urpti rputi pruti uprti purti tiupr itupr tuipr utipr iutpr uitpr tipur itpur tpiur ptiur iptur pitur tupir utpir tpuir ptuir uptir putir iuptr uiptr iputr piutr upitr puitr riupt irupt ruipt uript iurpt uirpt riput irput rpiut priut iprut pirut rupit urpit rpuit pruit uprit purit iuprt uiprt ipurt piurt upirt puirt
Note: these 'words' (valid or invalid) are all the permutations of the word triup. These words are obtained by scrambling the letters in triup.