I could ward you could ward she could ward we could ward you could ward they could ward
V-ing form
I could be warding you could be warding she could be warding we could be warding you could be warding they could be warding
Perfect
I could have warded you could have warded she 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 she could have been warding we could have been warding you could have been warding they could have been warding
Negation
Simple form
I couldn't ward you couldn't ward she couldn't ward we couldn't ward you couldn't ward they couldn't ward
V-ing form
I couldn't be warding you couldn't be warding she couldn't be warding we couldn't be warding you couldn't be warding they couldn't be warding
Perfect
I couldn't have warded you couldn't have warded she couldn't have warded we couldn't have warded you couldn't have warded they couldn't have warded
V-ing perfect
I couldn't have been warding you couldn't have been warding she couldn't have been warding we couldn't have been warding you couldn't have been warding they couldn't have been warding
Interrogative form
Simple form
could I ward? could you ward? could she ward? could we ward? could you ward? could they ward?
V-ing form
could I be warding? could you be warding? could she be warding? could we be warding? could you be warding? could they be warding?
Perfect
could I have warded? could you have warded? could she 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 she have been warding? could we have been warding? could you have been warding? could they have been warding?
Interro-negative form
Simple form
couldn't I ward? couldn't you ward? couldn't she ward? couldn't we ward? couldn't you ward? couldn't they ward?
V-ing form
couldn't I be warding? couldn't you be warding? couldn't she be warding? couldn't we be warding? couldn't you be warding? couldn't they be warding?
Perfect
couldn't I have warded? couldn't you have warded? couldn't she have warded? couldn't we have warded? couldn't you have warded? couldn't they have warded?
V-ing perfect
couldn't I have been warding? couldn't you have been warding? couldn't she have been warding? couldn't we have been warding? couldn't you have been warding? couldn't they have been warding?