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