Present participle; Past participle - tiffing - tiffed Present - tiff - tiff - tiffs - tiff - tiff - tiff Past - tiffed - tiffed - tiffed - tiffed - tiffed - tiffed Future - will tiff - will tiff - will tiff - will tiff - will tiff - will tiff Present conditional - would tiff - would tiff - would tiff - would tiff - would tiff - would tiff Present Perfect - have tiffed - have tiffed - has tiffed - have tiffed - have tiffed - have tiffed Past Perfect - had tiffed - had tiffed - had tiffed - had tiffed - had tiffed - had tiffed Future Perfect - will have tiffed - will have tiffed - will have tiffed - will have tiffed - will have tiffed - will have tiffed Past conditional - would have tiffed - would have tiffed - would have tiffed - would have tiffed - would have tiffed - would have tiffed Imperative - - - tiff - - - - - - - -