I could conquer you could conquer he could conquer we could conquer you could conquer they could conquer
V-ing form
I could be conquering you could be conquering he could be conquering we could be conquering you could be conquering they could be conquering
Perfect
I could have conquered you could have conquered he could have conquered we could have conquered you could have conquered they could have conquered
V-ing perfect
I could have been conquering you could have been conquering he could have been conquering we could have been conquering you could have been conquering they could have been conquering
Negation
Simple form
I could not conquer you could not conquer he could not conquer we could not conquer you could not conquer they could not conquer
V-ing form
I could not be conquering you could not be conquering he could not be conquering we could not be conquering you could not be conquering they could not be conquering
Perfect
I could not have conquered you could not have conquered he could not have conquered we could not have conquered you could not have conquered they could not have conquered
V-ing perfect
I could not have been conquering you could not have been conquering he could not have been conquering we could not have been conquering you could not have been conquering they could not have been conquering
Interrogative form
Simple form
could I conquer? could you conquer? could he conquer? could we conquer? could you conquer? could they conquer?
V-ing form
could I be conquering? could you be conquering? could he be conquering? could we be conquering? could you be conquering? could they be conquering?
Perfect
could I have conquered? could you have conquered? could he have conquered? could we have conquered? could you have conquered? could they have conquered?
V-ing perfect
could I have been conquering? could you have been conquering? could he have been conquering? could we have been conquering? could you have been conquering? could they have been conquering?
Interro-negative form
Simple form
could I not conquer? could you not conquer? could he not conquer? could we not conquer? could you not conquer? could they not conquer?
V-ing form
could I not be conquering? could you not be conquering? could he not be conquering? could we not be conquering? could you not be conquering? could they not be conquering?
Perfect
could I not have conquered? could you not have conquered? could he not have conquered? could we not have conquered? could you not have conquered? could they not have conquered?
V-ing perfect
could I not have been conquering? could you not have been conquering? could he not have been conquering? could we not have been conquering? could you not have been conquering? could they not have been conquering?