pulka uplka pluka lpuka ulpka lupka pukla upkla pkula kpula ukpla kupla plkua lpkua pklua kplua lkpua klpua ulkpa lukpa uklpa kulpa lkupa klupa pulak uplak pluak lpuak ulpak lupak pualk upalk paulk apulk uaplk auplk plauk lpauk paluk apluk lapuk alpuk ulapk luapk ualpk aulpk laupk alupk pukal upkal pkual kpual ukpal kupal puakl upakl paukl apukl uapkl aupkl pkaul kpaul pakul apkul kapul akpul ukapl kuapl uakpl aukpl kaupl akupl plkau lpkau pklau kplau lkpau klpau plaku lpaku palku aplku lapku alpku pkalu kpalu paklu apklu kaplu akplu lkapu klapu lakpu alkpu kalpu aklpu ulkap lukap uklap kulap lkuap kluap ulakp luakp ualkp aulkp laukp alukp ukalp kualp uaklp auklp kaulp akulp lkaup klaup lakup alkup kalup aklup
Note: these 'words' (valid or invalid) are all the permutations of the word pulka. These words are obtained by scrambling the letters in pulka.