I would birl you would birl he would birl we would birl you would birl they would birl
V-ing form
I would be birling you would be birling he would be birling we would be birling you would be birling they would be birling
Perfect
I would have birled you would have birled he would have birled we would have birled you would have birled they would have birled
V-ing perfect
I would have been birling you would have been birling he would have been birling we would have been birling you would have been birling they would have been birling
Negation
Simple form
I would not birl you would not birl he would not birl we would not birl you would not birl they would not birl
V-ing form
I would not be birling you would not be birling he would not be birling we would not be birling you would not be birling they would not be birling
Perfect
I would not have birled you would not have birled he would not have birled we would not have birled you would not have birled they would not have birled
V-ing perfect
I would not have been birling you would not have been birling he would not have been birling we would not have been birling you would not have been birling they would not have been birling
Interrogative form
Simple form
would I birl? would you birl? would he birl? would we birl? would you birl? would they birl?
V-ing form
would I be birling? would you be birling? would he be birling? would we be birling? would you be birling? would they be birling?
Perfect
would I have birled? would you have birled? would he have birled? would we have birled? would you have birled? would they have birled?
V-ing perfect
would I have been birling? would you have been birling? would he have been birling? would we have been birling? would you have been birling? would they have been birling?
Interro-negative form
Simple form
would I not birl? would you not birl? would he not birl? would we not birl? would you not birl? would they not birl?
V-ing form
would I not be birling? would you not be birling? would he not be birling? would we not be birling? would you not be birling? would they not be birling?
Perfect
would I not have birled? would you not have birled? would he not have birled? would we not have birled? would you not have birled? would they not have birled?
V-ing perfect
would I not have been birling? would you not have been birling? would he not have been birling? would we not have been birling? would you not have been birling? would they not have been birling?