English verb conjugation
COULD ROUST

Regular verb: roust - rousted - rousted

Affirmation

Simple form	V-ing form
I could roust you could roust he could roust we could roust you could roust they could roust	I could be rousting you could be rousting he 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 he 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 he 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 couldn't roust you couldn't roust he couldn't roust we couldn't roust you couldn't roust they couldn't roust	I couldn't be rousting you couldn't be rousting he couldn't be rousting we couldn't be rousting you couldn't be rousting they couldn't be rousting
Perfect	V-ing perfect
I couldn't have rousted you couldn't have rousted he couldn't have rousted we couldn't have rousted you couldn't have rousted they couldn't have rousted	I couldn't have been rousting you couldn't have been rousting he couldn't have been rousting we couldn't have been rousting you couldn't have been rousting they couldn't have been rousting

Interrogative form

Simple form	V-ing form
could I roust? could you roust? could he roust? could we roust? could you roust? could they roust?	could I be rousting? could you be rousting? could he 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 he 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 he 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
couldn't I roust? couldn't you roust? couldn't he roust? couldn't we roust? couldn't you roust? couldn't they roust?	couldn't I be rousting? couldn't you be rousting? couldn't he be rousting? couldn't we be rousting? couldn't you be rousting? couldn't they be rousting?
Perfect	V-ing perfect
couldn't I have rousted? couldn't you have rousted? couldn't he have rousted? couldn't we have rousted? couldn't you have rousted? couldn't they have rousted?	couldn't I have been rousting? couldn't you have been rousting? couldn't he have been rousting? couldn't we have been rousting? couldn't you have been rousting? couldn't they have been rousting?