prahu rpahu parhu aprhu raphu arphu prhau rphau phrau hprau rhpau hrpau pahru aphru pharu hparu ahpru hapru rahpu arhpu rhapu hrapu ahrpu harpu prauh rpauh paruh apruh rapuh arpuh pruah rpuah purah uprah rupah urpah paurh apurh puarh uparh auprh uaprh rauph aruph ruaph uraph aurph uarph prhua rphua phrua hprua rhpua hrpua pruha rpuha purha uprha rupha urpha phura hpura puhra uphra hupra uhpra rhupa hrupa ruhpa urhpa hurpa uhrpa pahur aphur phaur hpaur ahpur hapur pauhr apuhr puahr upahr auphr uaphr phuar hpuar puhar uphar hupar uhpar ahupr haupr auhpr uahpr huapr uhapr rahup arhup rhaup hraup ahrup harup rauhp aruhp ruahp urahp aurhp uarhp rhuap hruap ruhap urhap hurap uhrap ahurp haurp auhrp uahrp huarp uharp
Note: these 'words' (valid or invalid) are all the permutations of the word prahu. These words are obtained by scrambling the letters in prahu.