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 can't ward you can't ward he can't ward we can't ward you can't ward they can't ward
V-ing form
I can't be warding you can't be warding he can't be warding we can't be warding you can't be warding they can't be warding
Perfect
I can't have warded you can't have warded he can't have warded we can't have warded you can't have warded they can't have warded
V-ing perfect
I can't have been warding you can't have been warding he can't have been warding we can't have been warding you can't have been warding they can't 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't I ward? can't you ward? can't he ward? can't we ward? can't you ward? can't they ward?
V-ing form
can't I be warding? can't you be warding? can't he be warding? can't we be warding? can't you be warding? can't they be warding?
Perfect
can't I have warded? can't you have warded? can't he have warded? can't we have warded? can't you have warded? can't they have warded?
V-ing perfect
can't I have been warding? can't you have been warding? can't he have been warding? can't we have been warding? can't you have been warding? can't they have been warding?