English verb conjugation
COULD SWITCHBACK

Regular verb: switchback - switchbacked - switchbacked

Affirmation

Simple form	V-ing form
I could switchback you could switchback she could switchback we could switchback you could switchback they could switchback	I could be switchbacking you could be switchbacking she could be switchbacking we could be switchbacking you could be switchbacking they could be switchbacking
Perfect	V-ing perfect
I could have switchbacked you could have switchbacked she could have switchbacked we could have switchbacked you could have switchbacked they could have switchbacked	I could have been switchbacking you could have been switchbacking she could have been switchbacking we could have been switchbacking you could have been switchbacking they could have been switchbacking

Negation

Simple form	V-ing form
I could not switchback you could not switchback she could not switchback we could not switchback you could not switchback they could not switchback	I could not be switchbacking you could not be switchbacking she could not be switchbacking we could not be switchbacking you could not be switchbacking they could not be switchbacking
Perfect	V-ing perfect
I could not have switchbacked you could not have switchbacked she could not have switchbacked we could not have switchbacked you could not have switchbacked they could not have switchbacked	I could not have been switchbacking you could not have been switchbacking she could not have been switchbacking we could not have been switchbacking you could not have been switchbacking they could not have been switchbacking

Interrogative form

Simple form	V-ing form
could I switchback? could you switchback? could she switchback? could we switchback? could you switchback? could they switchback?	could I be switchbacking? could you be switchbacking? could she be switchbacking? could we be switchbacking? could you be switchbacking? could they be switchbacking?
Perfect	V-ing perfect
could I have switchbacked? could you have switchbacked? could she have switchbacked? could we have switchbacked? could you have switchbacked? could they have switchbacked?	could I have been switchbacking? could you have been switchbacking? could she have been switchbacking? could we have been switchbacking? could you have been switchbacking? could they have been switchbacking?

Interro-negative form

Simple form	V-ing form
could I not switchback? could you not switchback? could she not switchback? could we not switchback? could you not switchback? could they not switchback?	could I not be switchbacking? could you not be switchbacking? could she not be switchbacking? could we not be switchbacking? could you not be switchbacking? could they not be switchbacking?
Perfect	V-ing perfect
could I not have switchbacked? could you not have switchbacked? could she not have switchbacked? could we not have switchbacked? could you not have switchbacked? could they not have switchbacked?	could I not have been switchbacking? could you not have been switchbacking? could she not have been switchbacking? could we not have been switchbacking? could you not have been switchbacking? could they not have been switchbacking?