I could hazard you could hazard he could hazard we could hazard you could hazard they could hazard
V-ing form
I could be hazarding you could be hazarding he could be hazarding we could be hazarding you could be hazarding they could be hazarding
Perfect
I could have hazarded you could have hazarded he could have hazarded we could have hazarded you could have hazarded they could have hazarded
V-ing perfect
I could have been hazarding you could have been hazarding he could have been hazarding we could have been hazarding you could have been hazarding they could have been hazarding
Negation
Simple form
I could not hazard you could not hazard he could not hazard we could not hazard you could not hazard they could not hazard
V-ing form
I could not be hazarding you could not be hazarding he could not be hazarding we could not be hazarding you could not be hazarding they could not be hazarding
Perfect
I could not have hazarded you could not have hazarded he could not have hazarded we could not have hazarded you could not have hazarded they could not have hazarded
V-ing perfect
I could not have been hazarding you could not have been hazarding he could not have been hazarding we could not have been hazarding you could not have been hazarding they could not have been hazarding
Interrogative form
Simple form
could I hazard? could you hazard? could he hazard? could we hazard? could you hazard? could they hazard?
V-ing form
could I be hazarding? could you be hazarding? could he be hazarding? could we be hazarding? could you be hazarding? could they be hazarding?
Perfect
could I have hazarded? could you have hazarded? could he have hazarded? could we have hazarded? could you have hazarded? could they have hazarded?
V-ing perfect
could I have been hazarding? could you have been hazarding? could he have been hazarding? could we have been hazarding? could you have been hazarding? could they have been hazarding?
Interro-negative form
Simple form
could I not hazard? could you not hazard? could he not hazard? could we not hazard? could you not hazard? could they not hazard?
V-ing form
could I not be hazarding? could you not be hazarding? could he not be hazarding? could we not be hazarding? could you not be hazarding? could they not be hazarding?
Perfect
could I not have hazarded? could you not have hazarded? could he not have hazarded? could we not have hazarded? could you not have hazarded? could they not have hazarded?
V-ing perfect
could I not have been hazarding? could you not have been hazarding? could he not have been hazarding? could we not have been hazarding? could you not have been hazarding? could they not have been hazarding?