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