hurra uhrra hrura rhura urhra ruhra hurra uhrra hrura rhura urhra ruhra hrrua rhrua hrrua rhrua rrhua rrhua urrha rurha urrha rurha rruha rruha hurar uhrar hruar rhuar urhar ruhar huarr uharr haurr ahurr uahrr auhrr hraur rhaur harur ahrur rahur arhur urahr ruahr uarhr aurhr rauhr aruhr hurar uhrar hruar rhuar urhar ruhar huarr uharr haurr ahurr uahrr auhrr hraur rhaur harur ahrur rahur arhur urahr ruahr uarhr aurhr rauhr aruhr hrrau rhrau hrrau rhrau rrhau rrhau hraru rharu harru ahrru rahru arhru hraru rharu harru ahrru rahru arhru rrahu rrahu rarhu arrhu rarhu arrhu urrah rurah urrah rurah rruah rruah urarh ruarh uarrh aurrh raurh arurh urarh ruarh uarrh aurrh raurh arurh rrauh rrauh raruh arruh raruh arruh
Note: these 'words' (valid or invalid) are all the permutations of the word hurra. These words are obtained by scrambling the letters in hurra.