I can defrost you can defrost he can defrost we can defrost you can defrost they can defrost
V-ing form
I can be defrosting you can be defrosting he can be defrosting we can be defrosting you can be defrosting they can be defrosting
Perfect
I can have defrosted you can have defrosted he can have defrosted we can have defrosted you can have defrosted they can have defrosted
V-ing perfect
I can have been defrosting you can have been defrosting he can have been defrosting we can have been defrosting you can have been defrosting they can have been defrosting
Negation
Simple form
I cannot defrost you cannot defrost he cannot defrost we cannot defrost you cannot defrost they cannot defrost
V-ing form
I cannot be defrosting you cannot be defrosting he cannot be defrosting we cannot be defrosting you cannot be defrosting they cannot be defrosting
Perfect
I cannot have defrosted you cannot have defrosted he cannot have defrosted we cannot have defrosted you cannot have defrosted they cannot have defrosted
V-ing perfect
I cannot have been defrosting you cannot have been defrosting he cannot have been defrosting we cannot have been defrosting you cannot have been defrosting they cannot have been defrosting
Interrogative form
Simple form
can I defrost? can you defrost? can he defrost? can we defrost? can you defrost? can they defrost?
V-ing form
can I be defrosting? can you be defrosting? can he be defrosting? can we be defrosting? can you be defrosting? can they be defrosting?
Perfect
can I have defrosted? can you have defrosted? can he have defrosted? can we have defrosted? can you have defrosted? can they have defrosted?
V-ing perfect
can I have been defrosting? can you have been defrosting? can he have been defrosting? can we have been defrosting? can you have been defrosting? can they have been defrosting?
Interro-negative form
Simple form
can I not defrost? can you not defrost? can he not defrost? can we not defrost? can you not defrost? can they not defrost?
V-ing form
can I not be defrosting? can you not be defrosting? can he not be defrosting? can we not be defrosting? can you not be defrosting? can they not be defrosting?
Perfect
can I not have defrosted? can you not have defrosted? can he not have defrosted? can we not have defrosted? can you not have defrosted? can they not have defrosted?
V-ing perfect
can I not have been defrosting? can you not have been defrosting? can he not have been defrosting? can we not have been defrosting? can you not have been defrosting? can they not have been defrosting?