skips ksips sikps iskps kisps iksps skpis kspis spkis pskis kpsis pksis sipks ispks spiks psiks ipsks pisks kipss ikpss kpiss pkiss ipkss pikss skisp ksisp siksp isksp kissp ikssp sksip kssip sskip sskip kssip sksip siskp isskp ssikp ssikp isskp siskp kissp ikssp ksisp skisp isksp siksp skpsi kspsi spksi psksi kpssi pkssi skspi ksspi sskpi sskpi ksspi skspi spski psski sspki sspki psski spski kpssi pkssi kspsi skpsi psksi spksi sipsk ispsk spisk psisk ipssk pissk sispk isspk ssipk ssipk isspk sispk spsik pssik sspik sspik pssik spsik ipssk pissk ispsk sipsk psisk spisk kipss ikpss kpiss pkiss ipkss pikss kisps iksps ksips skips iskps sikps kpsis pksis kspis skpis pskis spkis ipsks pisks ispks sipks psiks spiks
Note: these 'words' (valid or invalid) are all the permutations of the word skips. These words are obtained by scrambling the letters in skips.