unapt nuapt uanpt aunpt naupt anupt unpat nupat upnat punat npuat pnuat uapnt aupnt upant puant apunt paunt naput anput npaut pnaut apnut panut unatp nuatp uantp auntp nautp anutp untap nutap utnap tunap ntuap tnuap uatnp autnp utanp tuanp atunp taunp natup antup ntaup tnaup atnup tanup unpta nupta upnta punta nputa pnuta untpa nutpa utnpa tunpa ntupa tnupa uptna putna utpna tupna ptuna tpuna nptua pntua ntpua tnpua ptnua tpnua uaptn auptn upatn puatn aputn pautn uatpn autpn utapn tuapn atupn taupn uptan putan utpan tupan ptuan tpuan aptun patun atpun tapun ptaun tpaun naptu anptu npatu pnatu apntu pantu natpu antpu ntapu tnapu atnpu tanpu nptau pntau ntpau tnpau ptnau tpnau aptnu patnu atpnu tapnu ptanu tpanu
Note: these 'words' (valid or invalid) are all the permutations of the word unapt. These words are obtained by scrambling the letters in unapt.