I could bard you could bard he could bard we could bard you could bard they could bard
V-ing form
I could be barding you could be barding he could be barding we could be barding you could be barding they could be barding
Perfect
I could have barded you could have barded he could have barded we could have barded you could have barded they could have barded
V-ing perfect
I could have been barding you could have been barding he could have been barding we could have been barding you could have been barding they could have been barding
Negation
Simple form
I couldn't bard you couldn't bard he couldn't bard we couldn't bard you couldn't bard they couldn't bard
V-ing form
I couldn't be barding you couldn't be barding he couldn't be barding we couldn't be barding you couldn't be barding they couldn't be barding
Perfect
I couldn't have barded you couldn't have barded he couldn't have barded we couldn't have barded you couldn't have barded they couldn't have barded
V-ing perfect
I couldn't have been barding you couldn't have been barding he couldn't have been barding we couldn't have been barding you couldn't have been barding they couldn't have been barding
Interrogative form
Simple form
could I bard? could you bard? could he bard? could we bard? could you bard? could they bard?
V-ing form
could I be barding? could you be barding? could he be barding? could we be barding? could you be barding? could they be barding?
Perfect
could I have barded? could you have barded? could he have barded? could we have barded? could you have barded? could they have barded?
V-ing perfect
could I have been barding? could you have been barding? could he have been barding? could we have been barding? could you have been barding? could they have been barding?
Interro-negative form
Simple form
couldn't I bard? couldn't you bard? couldn't he bard? couldn't we bard? couldn't you bard? couldn't they bard?
V-ing form
couldn't I be barding? couldn't you be barding? couldn't he be barding? couldn't we be barding? couldn't you be barding? couldn't they be barding?
Perfect
couldn't I have barded? couldn't you have barded? couldn't he have barded? couldn't we have barded? couldn't you have barded? couldn't they have barded?
V-ing perfect
couldn't I have been barding? couldn't you have been barding? couldn't he have been barding? couldn't we have been barding? couldn't you have been barding? couldn't they have been barding?