alfas lafas aflas falas lfaas flaas alafs laafs aalfs aalfs laafs alafs afals faals aafls aafls faals afals lfaas flaas lafas alfas falas aflas alfsa lafsa aflsa falsa lfasa flasa alsfa lasfa aslfa salfa lsafa slafa afsla fasla asfla safla fsala sfala lfsaa flsaa lsfaa slfaa fslaa sflaa alasf laasf aalsf aalsf laasf alasf alsaf lasaf aslaf salaf lsaaf slaaf aaslf aaslf asalf saalf asalf saalf lasaf alsaf lsaaf slaaf aslaf salaf afasl faasl aafsl aafsl faasl afasl afsal fasal asfal safal fsaal sfaal aasfl aasfl asafl saafl asafl saafl fasal afsal fsaal sfaal asfal safal lfasa flasa lafsa alfsa falsa aflsa lfsaa flsaa lsfaa slfaa fslaa sflaa lasfa alsfa lsafa slafa aslfa salfa fasla afsla fsala sfala asfla safla
Note: these 'words' (valid or invalid) are all the permutations of the word alfas. These words are obtained by scrambling the letters in alfas.