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