balks ablks blaks lbaks albks labks bakls abkls bkals kbals akbls kabls blkas lbkas bklas kblas lkbas klbas alkbs lakbs aklbs kalbs lkabs klabs balsk ablsk blask lbask albsk labsk baslk abslk bsalk sbalk asblk sablk blsak lbsak bslak sblak lsbak slbak alsbk lasbk aslbk salbk lsabk slabk baksl abksl bkasl kbasl akbsl kabsl baskl abskl bsakl sbakl asbkl sabkl bksal kbsal bskal sbkal ksbal skbal aksbl kasbl askbl sakbl ksabl skabl blksa lbksa bklsa kblsa lkbsa klbsa blska lbska bslka sblka lsbka slbka bksla kbsla bskla sbkla ksbla skbla lksba klsba lskba slkba kslba sklba alksb laksb aklsb kalsb lkasb klasb alskb laskb aslkb salkb lsakb slakb akslb kaslb asklb saklb ksalb skalb lksab klsab lskab slkab kslab sklab
Note: these 'words' (valid or invalid) are all the permutations of the word balks. These words are obtained by scrambling the letters in balks.