I can pot you can pot she can pot we can pot you can pot they can pot
V-ing form
I can be potting you can be potting she can be potting we can be potting you can be potting they can be potting
Perfect
I can have potted you can have potted she can have potted we can have potted you can have potted they can have potted
V-ing perfect
I can have been potting you can have been potting she can have been potting we can have been potting you can have been potting they can have been potting
Negation
Simple form
I cannot pot you cannot pot she cannot pot we cannot pot you cannot pot they cannot pot
V-ing form
I cannot be potting you cannot be potting she cannot be potting we cannot be potting you cannot be potting they cannot be potting
Perfect
I cannot have potted you cannot have potted she cannot have potted we cannot have potted you cannot have potted they cannot have potted
V-ing perfect
I cannot have been potting you cannot have been potting she cannot have been potting we cannot have been potting you cannot have been potting they cannot have been potting
Interrogative form
Simple form
can I pot? can you pot? can she pot? can we pot? can you pot? can they pot?
V-ing form
can I be potting? can you be potting? can she be potting? can we be potting? can you be potting? can they be potting?
Perfect
can I have potted? can you have potted? can she have potted? can we have potted? can you have potted? can they have potted?
V-ing perfect
can I have been potting? can you have been potting? can she have been potting? can we have been potting? can you have been potting? can they have been potting?
Interro-negative form
Simple form
can I not pot? can you not pot? can she not pot? can we not pot? can you not pot? can they not pot?
V-ing form
can I not be potting? can you not be potting? can she not be potting? can we not be potting? can you not be potting? can they not be potting?
Perfect
can I not have potted? can you not have potted? can she not have potted? can we not have potted? can you not have potted? can they not have potted?
V-ing perfect
can I not have been potting? can you not have been potting? can she not have been potting? can we not have been potting? can you not have been potting? can they not have been potting?