I could salt you could salt she could salt we could salt you could salt they could salt
V-ing form
I could be salting you could be salting she could be salting we could be salting you could be salting they could be salting
Perfect
I could have salted you could have salted she could have salted we could have salted you could have salted they could have salted
V-ing perfect
I could have been salting you could have been salting she could have been salting we could have been salting you could have been salting they could have been salting
Negation
Simple form
I could not salt you could not salt she could not salt we could not salt you could not salt they could not salt
V-ing form
I could not be salting you could not be salting she could not be salting we could not be salting you could not be salting they could not be salting
Perfect
I could not have salted you could not have salted she could not have salted we could not have salted you could not have salted they could not have salted
V-ing perfect
I could not have been salting you could not have been salting she could not have been salting we could not have been salting you could not have been salting they could not have been salting
Interrogative form
Simple form
could I salt? could you salt? could she salt? could we salt? could you salt? could they salt?
V-ing form
could I be salting? could you be salting? could she be salting? could we be salting? could you be salting? could they be salting?
Perfect
could I have salted? could you have salted? could she have salted? could we have salted? could you have salted? could they have salted?
V-ing perfect
could I have been salting? could you have been salting? could she have been salting? could we have been salting? could you have been salting? could they have been salting?
Interro-negative form
Simple form
could I not salt? could you not salt? could she not salt? could we not salt? could you not salt? could they not salt?
V-ing form
could I not be salting? could you not be salting? could she not be salting? could we not be salting? could you not be salting? could they not be salting?
Perfect
could I not have salted? could you not have salted? could she not have salted? could we not have salted? could you not have salted? could they not have salted?
V-ing perfect
could I not have been salting? could you not have been salting? could she not have been salting? could we not have been salting? could you not have been salting? could they not have been salting?