hooka ohoka hooka ohoka oohka oohka hokoa ohkoa hkooa khooa okhoa kohoa hokoa ohkoa hkooa khooa okhoa kohoa ookha ookha okoha kooha okoha kooha hooak ohoak hooak ohoak oohak oohak hoaok ohaok haook ahook oahok aohok hoaok ohaok haook ahook oahok aohok ooahk ooahk oaohk aoohk oaohk aoohk hokao ohkao hkoao khoao okhao kohao hoako ohako haoko ahoko oahko aohko hkaoo khaoo hakoo ahkoo kahoo akhoo okaho koaho oakho aokho kaoho akoho hokao ohkao hkoao khoao okhao kohao hoako ohako haoko ahoko oahko aohko hkaoo khaoo hakoo ahkoo kahoo akhoo okaho koaho oakho aokho kaoho akoho ookah ookah okoah kooah okoah kooah ooakh ooakh oaokh aookh oaokh aookh okaoh koaoh oakoh aokoh kaooh akooh okaoh koaoh oakoh aokoh kaooh akooh
Note: these 'words' (valid or invalid) are all the permutations of the word hooka. These words are obtained by scrambling the letters in hooka.