I can gasp you can gasp she can gasp we can gasp you can gasp they can gasp
V-ing form
I can be gasping you can be gasping she can be gasping we can be gasping you can be gasping they can be gasping
Perfect
I can have gasped you can have gasped she can have gasped we can have gasped you can have gasped they can have gasped
V-ing perfect
I can have been gasping you can have been gasping she can have been gasping we can have been gasping you can have been gasping they can have been gasping
Negation
Simple form
I cannot gasp you cannot gasp she cannot gasp we cannot gasp you cannot gasp they cannot gasp
V-ing form
I cannot be gasping you cannot be gasping she cannot be gasping we cannot be gasping you cannot be gasping they cannot be gasping
Perfect
I cannot have gasped you cannot have gasped she cannot have gasped we cannot have gasped you cannot have gasped they cannot have gasped
V-ing perfect
I cannot have been gasping you cannot have been gasping she cannot have been gasping we cannot have been gasping you cannot have been gasping they cannot have been gasping
Interrogative form
Simple form
can I gasp? can you gasp? can she gasp? can we gasp? can you gasp? can they gasp?
V-ing form
can I be gasping? can you be gasping? can she be gasping? can we be gasping? can you be gasping? can they be gasping?
Perfect
can I have gasped? can you have gasped? can she have gasped? can we have gasped? can you have gasped? can they have gasped?
V-ing perfect
can I have been gasping? can you have been gasping? can she have been gasping? can we have been gasping? can you have been gasping? can they have been gasping?
Interro-negative form
Simple form
can I not gasp? can you not gasp? can she not gasp? can we not gasp? can you not gasp? can they not gasp?
V-ing form
can I not be gasping? can you not be gasping? can she not be gasping? can we not be gasping? can you not be gasping? can they not be gasping?
Perfect
can I not have gasped? can you not have gasped? can she not have gasped? can we not have gasped? can you not have gasped? can they not have gasped?
V-ing perfect
can I not have been gasping? can you not have been gasping? can she not have been gasping? can we not have been gasping? can you not have been gasping? can they not have been gasping?