I can ward you can ward he can ward we can ward you can ward they can ward
V-ing form
I can be warding you can be warding he can be warding we can be warding you can be warding they can be warding
Perfect
I can have warded you can have warded he can have warded we can have warded you can have warded they can have warded
V-ing perfect
I can have been warding you can have been warding he can have been warding we can have been warding you can have been warding they can have been warding
Negation
Simple form
I cannot ward you cannot ward he cannot ward we cannot ward you cannot ward they cannot ward
V-ing form
I cannot be warding you cannot be warding he cannot be warding we cannot be warding you cannot be warding they cannot be warding
Perfect
I cannot have warded you cannot have warded he cannot have warded we cannot have warded you cannot have warded they cannot have warded
V-ing perfect
I cannot have been warding you cannot have been warding he cannot have been warding we cannot have been warding you cannot have been warding they cannot have been warding
Interrogative form
Simple form
can I ward? can you ward? can he ward? can we ward? can you ward? can they ward?
V-ing form
can I be warding? can you be warding? can he be warding? can we be warding? can you be warding? can they be warding?
Perfect
can I have warded? can you have warded? can he have warded? can we have warded? can you have warded? can they have warded?
V-ing perfect
can I have been warding? can you have been warding? can he have been warding? can we have been warding? can you have been warding? can they have been warding?
Interro-negative form
Simple form
can I not ward? can you not ward? can he not ward? can we not ward? can you not ward? can they not ward?
V-ing form
can I not be warding? can you not be warding? can he not be warding? can we not be warding? can you not be warding? can they not be warding?
Perfect
can I not have warded? can you not have warded? can he not have warded? can we not have warded? can you not have warded? can they not have warded?
V-ing perfect
can I not have been warding? can you not have been warding? can he not have been warding? can we not have been warding? can you not have been warding? can they not have been warding?