English verb conjugation
COULD DEFROST

Regular verb: defrost - defrosted - defrosted

Affirmation

Simple form	V-ing form
I could defrost you could defrost she could defrost we could defrost you could defrost they could defrost	I could be defrosting you could be defrosting she could be defrosting we could be defrosting you could be defrosting they could be defrosting
Perfect	V-ing perfect
I could have defrosted you could have defrosted she could have defrosted we could have defrosted you could have defrosted they could have defrosted	I could have been defrosting you could have been defrosting she could have been defrosting we could have been defrosting you could have been defrosting they could have been defrosting

Negation

Simple form	V-ing form
I could not defrost you could not defrost she could not defrost we could not defrost you could not defrost they could not defrost	I could not be defrosting you could not be defrosting she could not be defrosting we could not be defrosting you could not be defrosting they could not be defrosting
Perfect	V-ing perfect
I could not have defrosted you could not have defrosted she could not have defrosted we could not have defrosted you could not have defrosted they could not have defrosted	I could not have been defrosting you could not have been defrosting she could not have been defrosting we could not have been defrosting you could not have been defrosting they could not have been defrosting

Interrogative form

Simple form	V-ing form
could I defrost? could you defrost? could she defrost? could we defrost? could you defrost? could they defrost?	could I be defrosting? could you be defrosting? could she be defrosting? could we be defrosting? could you be defrosting? could they be defrosting?
Perfect	V-ing perfect
could I have defrosted? could you have defrosted? could she have defrosted? could we have defrosted? could you have defrosted? could they have defrosted?	could I have been defrosting? could you have been defrosting? could she have been defrosting? could we have been defrosting? could you have been defrosting? could they have been defrosting?

Interro-negative form

Simple form	V-ing form
could I not defrost? could you not defrost? could she not defrost? could we not defrost? could you not defrost? could they not defrost?	could I not be defrosting? could you not be defrosting? could she not be defrosting? could we not be defrosting? could you not be defrosting? could they not be defrosting?
Perfect	V-ing perfect
could I not have defrosted? could you not have defrosted? could she not have defrosted? could we not have defrosted? could you not have defrosted? could they not have defrosted?	could I not have been defrosting? could you not have been defrosting? could she not have been defrosting? could we not have been defrosting? could you not have been defrosting? could they not have been defrosting?