English verb conjugation
COULD MISTAKE

Irregular verb: mistake - mistook - mistaken

Affirmation

Simple form	V-ing form
I could mistake you could mistake she could mistake we could mistake you could mistake they could mistake	I could be mistaking you could be mistaking she could be mistaking we could be mistaking you could be mistaking they could be mistaking
Perfect	V-ing perfect
I could have mistaken you could have mistaken she could have mistaken we could have mistaken you could have mistaken they could have mistaken	I could have been mistaking you could have been mistaking she could have been mistaking we could have been mistaking you could have been mistaking they could have been mistaking

Negation

Simple form	V-ing form
I could not mistake you could not mistake she could not mistake we could not mistake you could not mistake they could not mistake	I could not be mistaking you could not be mistaking she could not be mistaking we could not be mistaking you could not be mistaking they could not be mistaking
Perfect	V-ing perfect
I could not have mistaken you could not have mistaken she could not have mistaken we could not have mistaken you could not have mistaken they could not have mistaken	I could not have been mistaking you could not have been mistaking she could not have been mistaking we could not have been mistaking you could not have been mistaking they could not have been mistaking

Interrogative form

Simple form	V-ing form
could I mistake? could you mistake? could she mistake? could we mistake? could you mistake? could they mistake?	could I be mistaking? could you be mistaking? could she be mistaking? could we be mistaking? could you be mistaking? could they be mistaking?
Perfect	V-ing perfect
could I have mistaken? could you have mistaken? could she have mistaken? could we have mistaken? could you have mistaken? could they have mistaken?	could I have been mistaking? could you have been mistaking? could she have been mistaking? could we have been mistaking? could you have been mistaking? could they have been mistaking?

Interro-negative form

Simple form	V-ing form
could I not mistake? could you not mistake? could she not mistake? could we not mistake? could you not mistake? could they not mistake?	could I not be mistaking? could you not be mistaking? could she not be mistaking? could we not be mistaking? could you not be mistaking? could they not be mistaking?
Perfect	V-ing perfect
could I not have mistaken? could you not have mistaken? could she not have mistaken? could we not have mistaken? could you not have mistaken? could they not have mistaken?	could I not have been mistaking? could you not have been mistaking? could she not have been mistaking? could we not have been mistaking? could you not have been mistaking? could they not have been mistaking?