Present participle; Past participle - oxygenating - oxygenated Present - oxygenate - oxygenate - oxygenates - oxygenate - oxygenate - oxygenate Past - oxygenated - oxygenated - oxygenated - oxygenated - oxygenated - oxygenated Future - will oxygenate - will oxygenate - will oxygenate - will oxygenate - will oxygenate - will oxygenate Present conditional - would oxygenate - would oxygenate - would oxygenate - would oxygenate - would oxygenate - would oxygenate Present Perfect - have oxygenated - have oxygenated - has oxygenated - have oxygenated - have oxygenated - have oxygenated Past Perfect - had oxygenated - had oxygenated - had oxygenated - had oxygenated - had oxygenated - had oxygenated Future Perfect - will have oxygenated - will have oxygenated - will have oxygenated - will have oxygenated - will have oxygenated - will have oxygenated Past conditional - would have oxygenated - would have oxygenated - would have oxygenated - would have oxygenated - would have oxygenated - would have oxygenated Imperative - - - oxygenate - - - - - - - -