swail wsail sawil aswil wasil awsil swial wsial siwal iswal wisal iwsal saiwl asiwl siawl isawl aiswl iaswl waisl awisl wiasl iwasl aiwsl iawsl swali wsali sawli aswli wasli awsli swlai wslai slwai lswai wlsai lwsai salwi aslwi slawi lsawi alswi laswi walsi awlsi wlasi lwasi alwsi lawsi swila wsila siwla iswla wisla iwsla swlia wslia slwia lswia wlsia lwsia silwa islwa sliwa lsiwa ilswa liswa wilsa iwlsa wlisa lwisa ilwsa liwsa sailw asilw sialw isalw aislw iaslw saliw asliw slaiw lsaiw alsiw lasiw silaw islaw sliaw lsiaw ilsaw lisaw ailsw ialsw alisw laisw ilasw liasw wails awils wials iwals aiwls iawls walis awlis wlais lwais alwis lawis wilas iwlas wlias lwias ilwas liwas ailws ialws aliws laiws ilaws liaws
Note: these 'words' (valid or invalid) are all the permutations of the word swail. These words are obtained by scrambling the letters in swail.