wisps iwsps wsips swips iswps siwps wipss iwpss wpiss pwiss ipwss piwss wspis swpis wpsis pwsis spwis pswis ispws sipws ipsws pisws spiws psiws wissp iwssp wsisp swisp iswsp siwsp wissp iwssp wsisp swisp iswsp siwsp wssip swsip wssip swsip sswip sswip isswp siswp isswp siswp ssiwp ssiwp wipss iwpss wpiss pwiss ipwss piwss wisps iwsps wsips swips iswps siwps wpsis pwsis wspis swpis pswis spwis ipsws pisws ispws sipws psiws spiws wspsi swpsi wpssi pwssi spwsi pswsi wsspi swspi wsspi swspi sswpi sswpi wpssi pwssi wspsi swpsi pswsi spwsi spswi psswi sspwi sspwi psswi spswi ispsw sipsw ipssw pissw spisw psisw isspw sispw isspw sispw ssipw ssipw ipssw pissw ispsw sipsw psisw spisw spsiw pssiw sspiw sspiw pssiw spsiw
Note: these 'words' (valid or invalid) are all the permutations of the word wisps. These words are obtained by scrambling the letters in wisps.