twual wtual tuwal utwal wutal uwtal twaul wtaul tawul atwul watul awtul tuawl utawl tauwl atuwl uatwl autwl wuatl uwatl wautl awutl uawtl auwtl twula wtula tuwla utwla wutla uwtla twlua wtlua tlwua ltwua wltua lwtua tulwa utlwa tluwa ltuwa ultwa lutwa wulta uwlta wluta lwuta ulwta luwta twalu wtalu tawlu atwlu watlu awtlu twlau wtlau tlwau ltwau wltau lwtau talwu atlwu tlawu ltawu altwu latwu waltu awltu wlatu lwatu alwtu lawtu tualw utalw taulw atulw uatlw autlw tulaw utlaw tluaw ltuaw ultaw lutaw taluw atluw tlauw ltauw altuw latuw ualtw aultw ulatw luatw alutw lautw wualt uwalt wault awult uawlt auwlt wulat uwlat wluat lwuat ulwat luwat walut awlut wlaut lwaut alwut lawut ualwt aulwt ulawt luawt aluwt lauwt
Note: these 'words' (valid or invalid) are all the permutations of the word twual. These words are obtained by scrambling the letters in twual.