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