I could subject you could subject he could subject we could subject you could subject they could subject
V-ing form
I could be subjecting you could be subjecting he could be subjecting we could be subjecting you could be subjecting they could be subjecting
Perfect
I could have subjected you could have subjected he could have subjected we could have subjected you could have subjected they could have subjected
V-ing perfect
I could have been subjecting you could have been subjecting he could have been subjecting we could have been subjecting you could have been subjecting they could have been subjecting
Negation
Simple form
I could not subject you could not subject he could not subject we could not subject you could not subject they could not subject
V-ing form
I could not be subjecting you could not be subjecting he could not be subjecting we could not be subjecting you could not be subjecting they could not be subjecting
Perfect
I could not have subjected you could not have subjected he could not have subjected we could not have subjected you could not have subjected they could not have subjected
V-ing perfect
I could not have been subjecting you could not have been subjecting he could not have been subjecting we could not have been subjecting you could not have been subjecting they could not have been subjecting
Interrogative form
Simple form
could I subject? could you subject? could he subject? could we subject? could you subject? could they subject?
V-ing form
could I be subjecting? could you be subjecting? could he be subjecting? could we be subjecting? could you be subjecting? could they be subjecting?
Perfect
could I have subjected? could you have subjected? could he have subjected? could we have subjected? could you have subjected? could they have subjected?
V-ing perfect
could I have been subjecting? could you have been subjecting? could he have been subjecting? could we have been subjecting? could you have been subjecting? could they have been subjecting?
Interro-negative form
Simple form
could I not subject? could you not subject? could he not subject? could we not subject? could you not subject? could they not subject?
V-ing form
could I not be subjecting? could you not be subjecting? could he not be subjecting? could we not be subjecting? could you not be subjecting? could they not be subjecting?
Perfect
could I not have subjected? could you not have subjected? could he not have subjected? could we not have subjected? could you not have subjected? could they not have subjected?
V-ing perfect
could I not have been subjecting? could you not have been subjecting? could he not have been subjecting? could we not have been subjecting? could you not have been subjecting? could they not have been subjecting?