English verb conjugation
COULD ROUST

Regular verb: roust - rousted - rousted

Affirmation

Simple form	V-ing form
I could roust you could roust she could roust we could roust you could roust they could roust	I could be rousting you could be rousting she could be rousting we could be rousting you could be rousting they could be rousting
Perfect	V-ing perfect
I could have rousted you could have rousted she could have rousted we could have rousted you could have rousted they could have rousted	I could have been rousting you could have been rousting she could have been rousting we could have been rousting you could have been rousting they could have been rousting

Negation

Simple form	V-ing form
I could not roust you could not roust she could not roust we could not roust you could not roust they could not roust	I could not be rousting you could not be rousting she could not be rousting we could not be rousting you could not be rousting they could not be rousting
Perfect	V-ing perfect
I could not have rousted you could not have rousted she could not have rousted we could not have rousted you could not have rousted they could not have rousted	I could not have been rousting you could not have been rousting she could not have been rousting we could not have been rousting you could not have been rousting they could not have been rousting

Interrogative form

Simple form	V-ing form
could I roust? could you roust? could she roust? could we roust? could you roust? could they roust?	could I be rousting? could you be rousting? could she be rousting? could we be rousting? could you be rousting? could they be rousting?
Perfect	V-ing perfect
could I have rousted? could you have rousted? could she have rousted? could we have rousted? could you have rousted? could they have rousted?	could I have been rousting? could you have been rousting? could she have been rousting? could we have been rousting? could you have been rousting? could they have been rousting?

Interro-negative form

Simple form	V-ing form
could I not roust? could you not roust? could she not roust? could we not roust? could you not roust? could they not roust?	could I not be rousting? could you not be rousting? could she not be rousting? could we not be rousting? could you not be rousting? could they not be rousting?
Perfect	V-ing perfect
could I not have rousted? could you not have rousted? could she not have rousted? could we not have rousted? could you not have rousted? could they not have rousted?	could I not have been rousting? could you not have been rousting? could she not have been rousting? could we not have been rousting? could you not have been rousting? could they not have been rousting?