unrip nurip urnip runip nruip rnuip unirp nuirp uinrp iunrp niurp inurp urinp ruinp uirnp iurnp riunp irunp nriup rniup nirup inrup rinup irnup unrpi nurpi urnpi runpi nrupi rnupi unpri nupri upnri punri npuri pnuri urpni rupni uprni purni rpuni pruni nrpui rnpui nprui pnrui rpnui prnui unipr nuipr uinpr iunpr niupr inupr unpir nupir upnir punir npuir pnuir uipnr iupnr upinr puinr ipunr piunr nipur inpur npiur pniur ipnur pinur uripn ruipn uirpn iurpn riupn irupn urpin rupin uprin purin rpuin pruin uiprn iuprn upirn puirn ipurn piurn ripun irpun rpiun priun iprun pirun nripu rnipu nirpu inrpu rinpu irnpu nrpiu rnpiu npriu pnriu rpniu prniu nipru inpru npiru pniru ipnru pinru ripnu irpnu rpinu prinu iprnu pirnu
Note: these 'words' (valid or invalid) are all the permutations of the word unrip. These words are obtained by scrambling the letters in unrip.