English verb conjugation
MUST SWITCHBACK

Regular verb: switchback - switchbacked - switchbacked

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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