I could ratify you could ratify she could ratify we could ratify you could ratify they could ratify
V-ing form
I could be ratifying you could be ratifying she could be ratifying we could be ratifying you could be ratifying they could be ratifying
Perfect
I could have ratified you could have ratified she could have ratified we could have ratified you could have ratified they could have ratified
V-ing perfect
I could have been ratifying you could have been ratifying she could have been ratifying we could have been ratifying you could have been ratifying they could have been ratifying
Negation
Simple form
I could not ratify you could not ratify she could not ratify we could not ratify you could not ratify they could not ratify
V-ing form
I could not be ratifying you could not be ratifying she could not be ratifying we could not be ratifying you could not be ratifying they could not be ratifying
Perfect
I could not have ratified you could not have ratified she could not have ratified we could not have ratified you could not have ratified they could not have ratified
V-ing perfect
I could not have been ratifying you could not have been ratifying she could not have been ratifying we could not have been ratifying you could not have been ratifying they could not have been ratifying
Interrogative form
Simple form
could I ratify? could you ratify? could she ratify? could we ratify? could you ratify? could they ratify?
V-ing form
could I be ratifying? could you be ratifying? could she be ratifying? could we be ratifying? could you be ratifying? could they be ratifying?
Perfect
could I have ratified? could you have ratified? could she have ratified? could we have ratified? could you have ratified? could they have ratified?
V-ing perfect
could I have been ratifying? could you have been ratifying? could she have been ratifying? could we have been ratifying? could you have been ratifying? could they have been ratifying?
Interro-negative form
Simple form
could I not ratify? could you not ratify? could she not ratify? could we not ratify? could you not ratify? could they not ratify?
V-ing form
could I not be ratifying? could you not be ratifying? could she not be ratifying? could we not be ratifying? could you not be ratifying? could they not be ratifying?
Perfect
could I not have ratified? could you not have ratified? could she not have ratified? could we not have ratified? could you not have ratified? could they not have ratified?
V-ing perfect
could I not have been ratifying? could you not have been ratifying? could she not have been ratifying? could we not have been ratifying? could you not have been ratifying? could they not have been ratifying?