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