Present participle; Past participle - lightering - lightered Present - lighter - lighter - lighters - lighter - lighter - lighter Past - lightered - lightered - lightered - lightered - lightered - lightered Future - will lighter - will lighter - will lighter - will lighter - will lighter - will lighter Present conditional - would lighter - would lighter - would lighter - would lighter - would lighter - would lighter Present Perfect - have lightered - have lightered - has lightered - have lightered - have lightered - have lightered Past Perfect - had lightered - had lightered - had lightered - had lightered - had lightered - had lightered Future Perfect - will have lightered - will have lightered - will have lightered - will have lightered - will have lightered - will have lightered Past conditional - would have lightered - would have lightered - would have lightered - would have lightered - would have lightered - would have lightered Imperative - - - lighter - - - - - - - -