flaff lfaff falff aflff lafff alfff flfaf lffaf fflaf fflaf lffaf flfaf faflf afflf ffalf ffalf afflf faflf lafff alfff lfaff flaff aflff falff flaff lfaff falff aflff lafff alfff flfaf lffaf fflaf fflaf lffaf flfaf faflf afflf ffalf ffalf afflf faflf lafff alfff lfaff flaff aflff falff flffa lfffa fflfa fflfa lfffa flffa flffa lfffa fflfa fflfa lfffa flffa fffla fffla fffla fffla fffla fffla lfffa flffa lfffa flffa fflfa fflfa faffl afffl ffafl ffafl afffl faffl faffl afffl ffafl ffafl afffl faffl fffal fffal fffal fffal fffal fffal afffl faffl afffl faffl ffafl ffafl lafff alfff lfaff flaff aflff falff lafff alfff lfaff flaff aflff falff lffaf flfaf lffaf flfaf fflaf fflaf afflf faflf afflf faflf ffalf ffalf
Note: these 'words' (valid or invalid) are all the permutations of the word flaff. These words are obtained by scrambling the letters in flaff.