spall psall sapll aspll pasll apsll splal pslal slpal lspal plsal lpsal salpl aslpl slapl lsapl alspl laspl palsl aplsl plasl lpasl alpsl lapsl spall psall sapll aspll pasll apsll splal pslal slpal lspal plsal lpsal salpl aslpl slapl lsapl alspl laspl palsl aplsl plasl lpasl alpsl lapsl splla pslla slpla lspla plsla lpsla splla pslla slpla lspla plsla lpsla sllpa lslpa sllpa lslpa llspa llspa pllsa lplsa pllsa lplsa llpsa llpsa sallp asllp slalp lsalp alslp laslp sallp asllp slalp lsalp alslp laslp sllap lslap sllap lslap llsap llsap allsp lalsp allsp lalsp llasp llasp palls aplls plals lpals alpls lapls palls aplls plals lpals alpls lapls pllas lplas pllas lplas llpas llpas allps lalps allps lalps llaps llaps
Note: these 'words' (valid or invalid) are all the permutations of the word spall. These words are obtained by scrambling the letters in spall.