English verb conjugation
COULD SEW

Irregular verb: sew - sewed - sewn

Affirmation

Simple form	V-ing form
I could sew you could sew he could sew we could sew you could sew they could sew	I could be sewing you could be sewing he could be sewing we could be sewing you could be sewing they could be sewing
Perfect	V-ing perfect
I could have sewn you could have sewn he could have sewn we could have sewn you could have sewn they could have sewn	I could have been sewing you could have been sewing he could have been sewing we could have been sewing you could have been sewing they could have been sewing

Negation

Simple form	V-ing form
I could not sew you could not sew he could not sew we could not sew you could not sew they could not sew	I could not be sewing you could not be sewing he could not be sewing we could not be sewing you could not be sewing they could not be sewing
Perfect	V-ing perfect
I could not have sewn you could not have sewn he could not have sewn we could not have sewn you could not have sewn they could not have sewn	I could not have been sewing you could not have been sewing he could not have been sewing we could not have been sewing you could not have been sewing they could not have been sewing

Interrogative form

Simple form	V-ing form
could I sew? could you sew? could he sew? could we sew? could you sew? could they sew?	could I be sewing? could you be sewing? could he be sewing? could we be sewing? could you be sewing? could they be sewing?
Perfect	V-ing perfect
could I have sewn? could you have sewn? could he have sewn? could we have sewn? could you have sewn? could they have sewn?	could I have been sewing? could you have been sewing? could he have been sewing? could we have been sewing? could you have been sewing? could they have been sewing?

Interro-negative form

Simple form	V-ing form
could I not sew? could you not sew? could he not sew? could we not sew? could you not sew? could they not sew?	could I not be sewing? could you not be sewing? could he not be sewing? could we not be sewing? could you not be sewing? could they not be sewing?
Perfect	V-ing perfect
could I not have sewn? could you not have sewn? could he not have sewn? could we not have sewn? could you not have sewn? could they not have sewn?	could I not have been sewing? could you not have been sewing? could he not have been sewing? could we not have been sewing? could you not have been sewing? could they not have been sewing?