Present participle; Past participle - differencing - differenced Present - difference - difference - differences - difference - difference - difference Past - differenced - differenced - differenced - differenced - differenced - differenced Future - will difference - will difference - will difference - will difference - will difference - will difference Present conditional - would difference - would difference - would difference - would difference - would difference - would difference Present Perfect - have differenced - have differenced - has differenced - have differenced - have differenced - have differenced Past Perfect - had differenced - had differenced - had differenced - had differenced - had differenced - had differenced Future Perfect - will have differenced - will have differenced - will have differenced - will have differenced - will have differenced - will have differenced Past conditional - would have differenced - would have differenced - would have differenced - would have differenced - would have differenced - would have differenced Imperative - - - difference - - - - - - - -