I could vituperate you could vituperate she could vituperate we could vituperate you could vituperate they could vituperate
V-ing form
I could be vituperating you could be vituperating she could be vituperating we could be vituperating you could be vituperating they could be vituperating
Perfect
I could have vituperated you could have vituperated she could have vituperated we could have vituperated you could have vituperated they could have vituperated
V-ing perfect
I could have been vituperating you could have been vituperating she could have been vituperating we could have been vituperating you could have been vituperating they could have been vituperating
Negation
Simple form
I could not vituperate you could not vituperate she could not vituperate we could not vituperate you could not vituperate they could not vituperate
V-ing form
I could not be vituperating you could not be vituperating she could not be vituperating we could not be vituperating you could not be vituperating they could not be vituperating
Perfect
I could not have vituperated you could not have vituperated she could not have vituperated we could not have vituperated you could not have vituperated they could not have vituperated
V-ing perfect
I could not have been vituperating you could not have been vituperating she could not have been vituperating we could not have been vituperating you could not have been vituperating they could not have been vituperating
Interrogative form
Simple form
could I vituperate? could you vituperate? could she vituperate? could we vituperate? could you vituperate? could they vituperate?
V-ing form
could I be vituperating? could you be vituperating? could she be vituperating? could we be vituperating? could you be vituperating? could they be vituperating?
Perfect
could I have vituperated? could you have vituperated? could she have vituperated? could we have vituperated? could you have vituperated? could they have vituperated?
V-ing perfect
could I have been vituperating? could you have been vituperating? could she have been vituperating? could we have been vituperating? could you have been vituperating? could they have been vituperating?
Interro-negative form
Simple form
could I not vituperate? could you not vituperate? could she not vituperate? could we not vituperate? could you not vituperate? could they not vituperate?
V-ing form
could I not be vituperating? could you not be vituperating? could she not be vituperating? could we not be vituperating? could you not be vituperating? could they not be vituperating?
Perfect
could I not have vituperated? could you not have vituperated? could she not have vituperated? could we not have vituperated? could you not have vituperated? could they not have vituperated?
V-ing perfect
could I not have been vituperating? could you not have been vituperating? could she not have been vituperating? could we not have been vituperating? could you not have been vituperating? could they not have been vituperating?