kbars bkars kabrs akbrs bakrs abkrs kbras bkras krbas rkbas brkas rbkas karbs akrbs krabs rkabs arkbs rakbs barks abrks braks rbaks arbks rabks kbasr bkasr kabsr akbsr baksr abksr kbsar bksar ksbar skbar bskar sbkar kasbr aksbr ksabr skabr askbr sakbr baskr abskr bsakr sbakr asbkr sabkr kbrsa bkrsa krbsa rkbsa brksa rbksa kbsra bksra ksbra skbra bskra sbkra krsba rksba ksrba skrba rskba srkba brska rbska bsrka sbrka rsbka srbka karsb akrsb krasb rkasb arksb raksb kasrb aksrb ksarb skarb askrb sakrb krsab rksab ksrab skrab rskab srkab arskb raskb asrkb sarkb rsakb srakb barsk abrsk brask rbask arbsk rabsk basrk absrk bsark sbark asbrk sabrk brsak rbsak bsrak sbrak rsbak srbak arsbk rasbk asrbk sarbk rsabk srabk
Note: these 'words' (valid or invalid) are all the permutations of the word kbars. These words are obtained by scrambling the letters in kbars.