creek rceek cerek ecrek recek ercek creek rceek cerek ecrek recek ercek ceerk ecerk ceerk ecerk eecrk eecrk reeck ereck reeck ereck eerck eerck creke rceke cerke ecrke recke ercke crkee rckee ckree kcree rkcee krcee cekre eckre ckere kcere ekcre kecre rekce erkce rkece krece ekrce kerce creke rceke cerke ecrke recke ercke crkee rckee ckree kcree rkcee krcee cekre eckre ckere kcere ekcre kecre rekce erkce rkece krece ekrce kerce ceekr ecekr ceekr ecekr eeckr eeckr ceker ecker ckeer kceer ekcer kecer ceker ecker ckeer kceer ekcer kecer eekcr eekcr ekecr keecr ekecr keecr reekc erekc reekc erekc eerkc eerkc rekec erkec rkeec kreec ekrec kerec rekec erkec rkeec kreec ekrec kerec eekrc eekrc ekerc keerc ekerc keerc
Note: these 'words' (valid or invalid) are all the permutations of the word creek. These words are obtained by scrambling the letters in creek.