I could altercate you could altercate she could altercate we could altercate you could altercate they could altercate
V-ing form
I could be altercating you could be altercating she could be altercating we could be altercating you could be altercating they could be altercating
Perfect
I could have altercated you could have altercated she could have altercated we could have altercated you could have altercated they could have altercated
V-ing perfect
I could have been altercating you could have been altercating she could have been altercating we could have been altercating you could have been altercating they could have been altercating
Negation
Simple form
I could not altercate you could not altercate she could not altercate we could not altercate you could not altercate they could not altercate
V-ing form
I could not be altercating you could not be altercating she could not be altercating we could not be altercating you could not be altercating they could not be altercating
Perfect
I could not have altercated you could not have altercated she could not have altercated we could not have altercated you could not have altercated they could not have altercated
V-ing perfect
I could not have been altercating you could not have been altercating she could not have been altercating we could not have been altercating you could not have been altercating they could not have been altercating
Interrogative form
Simple form
could I altercate? could you altercate? could she altercate? could we altercate? could you altercate? could they altercate?
V-ing form
could I be altercating? could you be altercating? could she be altercating? could we be altercating? could you be altercating? could they be altercating?
Perfect
could I have altercated? could you have altercated? could she have altercated? could we have altercated? could you have altercated? could they have altercated?
V-ing perfect
could I have been altercating? could you have been altercating? could she have been altercating? could we have been altercating? could you have been altercating? could they have been altercating?
Interro-negative form
Simple form
could I not altercate? could you not altercate? could she not altercate? could we not altercate? could you not altercate? could they not altercate?
V-ing form
could I not be altercating? could you not be altercating? could she not be altercating? could we not be altercating? could you not be altercating? could they not be altercating?
Perfect
could I not have altercated? could you not have altercated? could she not have altercated? could we not have altercated? could you not have altercated? could they not have altercated?
V-ing perfect
could I not have been altercating? could you not have been altercating? could she not have been altercating? could we not have been altercating? could you not have been altercating? could they not have been altercating?