whats hwats wahts awhts hawts ahwts whtas hwtas wthas twhas htwas thwas waths awths wtahs twahs atwhs tawhs hatws ahtws htaws thaws athws tahws whast hwast wahst awhst hawst ahwst whsat hwsat wshat swhat hswat shwat washt awsht wsaht swaht aswht sawht haswt ahswt hsawt shawt ashwt sahwt whtsa hwtsa wthsa twhsa htwsa thwsa whsta hwsta wshta swhta hswta shwta wtsha twsha wstha swtha tswha stwha htswa thswa hstwa shtwa tshwa sthwa watsh awtsh wtash twash atwsh tawsh wasth awsth wsath swath aswth sawth wtsah twsah wstah swtah tswah stwah atswh taswh astwh satwh tsawh stawh hatsw ahtsw htasw thasw athsw tahsw hastw ahstw hsatw shatw ashtw sahtw htsaw thsaw hstaw shtaw tshaw sthaw atshw tashw asthw sathw tsahw stahw
Note: these 'words' (valid or invalid) are all the permutations of the word whats. These words are obtained by scrambling the letters in whats.