Present participle; Past participle - roofing - roofed Present - roof - roof - roofs - roof - roof - roof Past - roofed - roofed - roofed - roofed - roofed - roofed Future - will roof - will roof - will roof - will roof - will roof - will roof Present conditional - would roof - would roof - would roof - would roof - would roof - would roof Present Perfect - have roofed - have roofed - has roofed - have roofed - have roofed - have roofed Past Perfect - had roofed - had roofed - had roofed - had roofed - had roofed - had roofed Future Perfect - will have roofed - will have roofed - will have roofed - will have roofed - will have roofed - will have roofed Past conditional - would have roofed - would have roofed - would have roofed - would have roofed - would have roofed - would have roofed Imperative - - - roof - - - - - - - -