would flatten
Regular verb: flatten - flattened- flattened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I would flatten
you would flatten
he would flatten
we would flatten
you would flatten
they would flatten 	I would be flattening
you would be flattening
he would be flattening
we would be flattening
you would be flattening
they would be flattening	I would have flattened
you would have flattened
he would have flattened
we would have flattened
you would have flattened
they would have flattened	I would have been flattening
you would have been flattening
he would have been flattening
we would have been flattening
you would have been flattening
they would have been flattening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I would not flatten
you would not flatten
he would not flatten
we would not flatten
you would not flatten
they would not flatten 	I would not be flattening
you would not be flattening
he would not be flattening
we would not be flattening
you would not be flattening
they would not be flattening	I would not have flattened
you would not have flattened
he would not have flattened
we would not have flattened
you would not have flattened
they would not have flattened	I would not have been flattening
you would not have been flattening
he would not have been flattening
we would not have been flattening
you would not have been flattening
they would not have been flattening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
would I flatten?
would you flatten?
would he flatten?
would we flatten?
would you flatten?
would they flatten? 	would I be flattening?
would you be flattening?
would he be flattening?
would we be flattening?
would you be flattening?
would they be flattening? 	would I have flattened?
would you have flattened?
would he have flattened?
would we have flattened?
would you have flattened?
would they have flattened? 	would I have been flattening?
would you have been flattening?
would he have been flattening?
would we have been flattening?
would you have been flattening?
would they have been flattening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
would I not flatten?
would you not flatten?
would he not flatten?
would we not flatten?
would you not flatten?
would they not flatten? 	would I not be flattening?
would you not be flattening?
would he not be flattening?
would we not be flattening?
would you not be flattening?
would they not be flattening? 	would I not have flattened?
would you not have flattened?
would he not have flattened?
would we not have flattened?
would you not have flattened?
would they not have flattened? 	would I not have been flattening?
would you not have been flattening?
would he not have been flattening?
would we not have been flattening?
would you not have been flattening?
would they not have been flattening?