piked ipked pkied kpied ikped kiped piekd ipekd peikd epikd iepkd eipkd pkeid kpeid pekid epkid kepid ekpid ikepd kiepd iekpd eikpd keipd ekipd pikde ipkde pkide kpide ikpde kipde pidke ipdke pdike dpike idpke dipke pkdie kpdie pdkie dpkie kdpie dkpie ikdpe kidpe idkpe dikpe kdipe dkipe piedk ipedk peidk epidk iepdk eipdk pidek ipdek pdiek dpiek idpek dipek pedik epdik pdeik dpeik edpik depik iedpk eidpk idepk diepk edipk deipk pkedi kpedi pekdi epkdi kepdi ekpdi pkdei kpdei pdkei dpkei kdpei dkpei pedki epdki pdeki dpeki edpki depki kedpi ekdpi kdepi dkepi edkpi dekpi ikedp kiedp iekdp eikdp keidp ekidp ikdep kidep idkep dikep kdiep dkiep iedkp eidkp idekp diekp edikp deikp kedip ekdip kdeip dkeip edkip dekip
Note: these 'words' (valid or invalid) are all the permutations of the word piked. These words are obtained by scrambling the letters in piked.