pinup ipnup pniup npiup inpup nipup piunp ipunp puinp upinp iupnp uipnp pnuip npuip punip upnip nupip unpip inupp niupp iunpp uinpp nuipp unipp pinpu ipnpu pnipu npipu inppu nippu pipnu ippnu ppinu ppinu ippnu pipnu pnpiu nppiu ppniu ppniu nppiu pnpiu inppu nippu ipnpu pinpu npipu pnipu piupn ipupn puipn upipn iuppn uippn pipun ippun ppiun ppiun ippun pipun pupin uppin ppuin ppuin uppin pupin iuppn uippn ipupn piupn upipn puipn pnupi npupi punpi upnpi nuppi unppi pnpui nppui ppnui ppnui nppui pnpui pupni uppni ppuni ppuni uppni pupni nuppi unppi npupi pnupi upnpi punpi inupp niupp iunpp uinpp nuipp unipp inpup nipup ipnup pinup npiup pniup iupnp uipnp ipunp piunp upinp puinp nupip unpip npuip pnuip upnip punip
Note: these 'words' (valid or invalid) are all the permutations of the word pinup. These words are obtained by scrambling the letters in pinup.