bouks obuks buoks uboks oubks uobks bokus obkus bkous kbous okbus kobus bukos ubkos bkuos kbuos ukbos kubos oukbs uokbs okubs koubs ukobs kuobs bousk obusk buosk ubosk oubsk uobsk bosuk obsuk bsouk sbouk osbuk sobuk busok ubsok bsuok sbuok usbok subok ousbk uosbk osubk soubk usobk suobk boksu obksu bkosu kbosu okbsu kobsu bosku obsku bsoku sboku osbku sobku bksou kbsou bskou sbkou ksbou skbou oksbu kosbu oskbu sokbu ksobu skobu bukso ubkso bkuso kbuso ukbso kubso busko ubsko bsuko sbuko usbko subko bksuo kbsuo bskuo sbkuo ksbuo skbuo uksbo kusbo uskbo sukbo ksubo skubo ouksb uoksb okusb kousb ukosb kuosb ouskb uoskb osukb soukb usokb suokb oksub kosub oskub sokub ksoub skoub uksob kusob uskob sukob ksuob skuob
Note: these 'words' (valid or invalid) are all the permutations of the word bouks. These words are obtained by scrambling the letters in bouks.