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