I could control you could control he could control we could control you could control they could control
V-ing form
I could be controlling you could be controlling he could be controlling we could be controlling you could be controlling they could be controlling
Perfect
I could have controlled you could have controlled he could have controlled we could have controlled you could have controlled they could have controlled
V-ing perfect
I could have been controlling you could have been controlling he could have been controlling we could have been controlling you could have been controlling they could have been controlling
Negation
Simple form
I could not control you could not control he could not control we could not control you could not control they could not control
V-ing form
I could not be controlling you could not be controlling he could not be controlling we could not be controlling you could not be controlling they could not be controlling
Perfect
I could not have controlled you could not have controlled he could not have controlled we could not have controlled you could not have controlled they could not have controlled
V-ing perfect
I could not have been controlling you could not have been controlling he could not have been controlling we could not have been controlling you could not have been controlling they could not have been controlling
Interrogative form
Simple form
could I control? could you control? could he control? could we control? could you control? could they control?
V-ing form
could I be controlling? could you be controlling? could he be controlling? could we be controlling? could you be controlling? could they be controlling?
Perfect
could I have controlled? could you have controlled? could he have controlled? could we have controlled? could you have controlled? could they have controlled?
V-ing perfect
could I have been controlling? could you have been controlling? could he have been controlling? could we have been controlling? could you have been controlling? could they have been controlling?
Interro-negative form
Simple form
could I not control? could you not control? could he not control? could we not control? could you not control? could they not control?
V-ing form
could I not be controlling? could you not be controlling? could he not be controlling? could we not be controlling? could you not be controlling? could they not be controlling?
Perfect
could I not have controlled? could you not have controlled? could he not have controlled? could we not have controlled? could you not have controlled? could they not have controlled?
V-ing perfect
could I not have been controlling? could you not have been controlling? could he not have been controlling? could we not have been controlling? could you not have been controlling? could they not have been controlling?