could sew
Irregular verb: sew - sewed- sewn

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