pupal uppal ppual ppual uppal pupal puapl upapl paupl apupl uappl auppl ppaul ppaul papul appul papul appul upapl puapl uappl auppl paupl apupl pupla uppla ppula ppula uppla pupla pulpa uplpa plupa lpupa ulppa luppa pplua pplua plpua lppua plpua lppua uplpa pulpa ulppa luppa plupa lpupa pualp upalp paulp apulp uaplp auplp pulap uplap pluap lpuap ulpap lupap palup aplup plaup lpaup alpup lapup ualpp aulpp ulapp luapp alupp laupp ppalu ppalu paplu applu paplu applu pplau pplau plpau lppau plpau lppau palpu aplpu plapu lpapu alppu lappu palpu aplpu plapu lpapu alppu lappu upalp pualp uaplp auplp paulp apulp uplap pulap ulpap lupap pluap lpuap ualpp aulpp ulapp luapp alupp laupp palup aplup plaup lpaup alpup lapup
Note: these 'words' (valid or invalid) are all the permutations of the word pupal. These words are obtained by scrambling the letters in pupal.