Present participle; Past participle - windowing - windowed Present - window - window - windows - window - window - window Past - windowed - windowed - windowed - windowed - windowed - windowed Future - will window - will window - will window - will window - will window - will window Present conditional - would window - would window - would window - would window - would window - would window Present Perfect - have windowed - have windowed - has windowed - have windowed - have windowed - have windowed Past Perfect - had windowed - had windowed - had windowed - had windowed - had windowed - had windowed Future Perfect - will have windowed - will have windowed - will have windowed - will have windowed - will have windowed - will have windowed Past conditional - would have windowed - would have windowed - would have windowed - would have windowed - would have windowed - would have windowed Imperative - - - window - - - - - - - -