Present participle; Past participle - fuel(l)ing - fuel(l)ed Present - fuel - fuel - fuels - fuel - fuel - fuel Past - fuel(l)ed - fuel(l)ed - fuel(l)ed - fuel(l)ed - fuel(l)ed - fuel(l)ed Future - will fuel - will fuel - will fuel - will fuel - will fuel - will fuel Present conditional - would fuel - would fuel - would fuel - would fuel - would fuel - would fuel Present Perfect - have fuel(l)ed - have fuel(l)ed - has fuel(l)ed - have fuel(l)ed - have fuel(l)ed - have fuel(l)ed Past Perfect - had fuel(l)ed - had fuel(l)ed - had fuel(l)ed - had fuel(l)ed - had fuel(l)ed - had fuel(l)ed Future Perfect - will have fuel(l)ed - will have fuel(l)ed - will have fuel(l)ed - will have fuel(l)ed - will have fuel(l)ed - will have fuel(l)ed Past conditional - would have fuel(l)ed - would have fuel(l)ed - would have fuel(l)ed - would have fuel(l)ed - would have fuel(l)ed - would have fuel(l)ed Imperative - - - fuel - - - - - - - -