I could deliberate you could deliberate he could deliberate we could deliberate you could deliberate they could deliberate
V-ing form
I could be deliberating you could be deliberating he could be deliberating we could be deliberating you could be deliberating they could be deliberating
Perfect
I could have deliberated you could have deliberated he could have deliberated we could have deliberated you could have deliberated they could have deliberated
V-ing perfect
I could have been deliberating you could have been deliberating he could have been deliberating we could have been deliberating you could have been deliberating they could have been deliberating
Negation
Simple form
I could not deliberate you could not deliberate he could not deliberate we could not deliberate you could not deliberate they could not deliberate
V-ing form
I could not be deliberating you could not be deliberating he could not be deliberating we could not be deliberating you could not be deliberating they could not be deliberating
Perfect
I could not have deliberated you could not have deliberated he could not have deliberated we could not have deliberated you could not have deliberated they could not have deliberated
V-ing perfect
I could not have been deliberating you could not have been deliberating he could not have been deliberating we could not have been deliberating you could not have been deliberating they could not have been deliberating
Interrogative form
Simple form
could I deliberate? could you deliberate? could he deliberate? could we deliberate? could you deliberate? could they deliberate?
V-ing form
could I be deliberating? could you be deliberating? could he be deliberating? could we be deliberating? could you be deliberating? could they be deliberating?
Perfect
could I have deliberated? could you have deliberated? could he have deliberated? could we have deliberated? could you have deliberated? could they have deliberated?
V-ing perfect
could I have been deliberating? could you have been deliberating? could he have been deliberating? could we have been deliberating? could you have been deliberating? could they have been deliberating?
Interro-negative form
Simple form
could I not deliberate? could you not deliberate? could he not deliberate? could we not deliberate? could you not deliberate? could they not deliberate?
V-ing form
could I not be deliberating? could you not be deliberating? could he not be deliberating? could we not be deliberating? could you not be deliberating? could they not be deliberating?
Perfect
could I not have deliberated? could you not have deliberated? could he not have deliberated? could we not have deliberated? could you not have deliberated? could they not have deliberated?
V-ing perfect
could I not have been deliberating? could you not have been deliberating? could he not have been deliberating? could we not have been deliberating? could you not have been deliberating? could they not have been deliberating?