I could pickle you could pickle she could pickle we could pickle you could pickle they could pickle
V-ing form
I could be pickling you could be pickling she could be pickling we could be pickling you could be pickling they could be pickling
Perfect
I could have pickled you could have pickled she could have pickled we could have pickled you could have pickled they could have pickled
V-ing perfect
I could have been pickling you could have been pickling she could have been pickling we could have been pickling you could have been pickling they could have been pickling
Negation
Simple form
I could not pickle you could not pickle she could not pickle we could not pickle you could not pickle they could not pickle
V-ing form
I could not be pickling you could not be pickling she could not be pickling we could not be pickling you could not be pickling they could not be pickling
Perfect
I could not have pickled you could not have pickled she could not have pickled we could not have pickled you could not have pickled they could not have pickled
V-ing perfect
I could not have been pickling you could not have been pickling she could not have been pickling we could not have been pickling you could not have been pickling they could not have been pickling
Interrogative form
Simple form
could I pickle? could you pickle? could she pickle? could we pickle? could you pickle? could they pickle?
V-ing form
could I be pickling? could you be pickling? could she be pickling? could we be pickling? could you be pickling? could they be pickling?
Perfect
could I have pickled? could you have pickled? could she have pickled? could we have pickled? could you have pickled? could they have pickled?
V-ing perfect
could I have been pickling? could you have been pickling? could she have been pickling? could we have been pickling? could you have been pickling? could they have been pickling?
Interro-negative form
Simple form
could I not pickle? could you not pickle? could she not pickle? could we not pickle? could you not pickle? could they not pickle?
V-ing form
could I not be pickling? could you not be pickling? could she not be pickling? could we not be pickling? could you not be pickling? could they not be pickling?
Perfect
could I not have pickled? could you not have pickled? could she not have pickled? could we not have pickled? could you not have pickled? could they not have pickled?
V-ing perfect
could I not have been pickling? could you not have been pickling? could she not have been pickling? could we not have been pickling? could you not have been pickling? could they not have been pickling?