scwak cswak swcak wscak cwsak wcsak scawk csawk sacwk ascwk caswk acswk swack wsack sawck aswck wasck awsck cwask wcask cawsk acwsk wacsk awcsk scwka cswka swcka wscka cwska wcska sckwa cskwa skcwa kscwa ckswa kcswa swkca wskca skwca kswca wksca kwsca cwksa wcksa ckwsa kcwsa wkcsa kwcsa scakw csakw sackw asckw caskw acskw sckaw cskaw skcaw kscaw cksaw kcsaw sakcw askcw skacw ksacw akscw kascw caksw acksw ckasw kcasw akcsw kacsw swakc wsakc sawkc aswkc waskc awskc swkac wskac skwac kswac wksac kwsac sakwc askwc skawc ksawc akswc kaswc waksc awksc wkasc kwasc akwsc kawsc cwaks wcaks cawks acwks wacks awcks cwkas wckas ckwas kcwas wkcas kwcas cakws ackws ckaws kcaws akcws kacws wakcs awkcs wkacs kwacs akwcs kawcs
Note: these 'words' (valid or invalid) are all the permutations of the word scwak. These words are obtained by scrambling the letters in scwak.