I must mechanize you must mechanize she must mechanize we must mechanize you must mechanize they must mechanize
V-ing form
I must be mechanizing you must be mechanizing she must be mechanizing we must be mechanizing you must be mechanizing they must be mechanizing
Perfect
I must have mechanized you must have mechanized she must have mechanized we must have mechanized you must have mechanized they must have mechanized
V-ing perfect
I must have been mechanizing you must have been mechanizing she must have been mechanizing we must have been mechanizing you must have been mechanizing they must have been mechanizing
Negation
Simple form
I must not mechanize you must not mechanize she must not mechanize we must not mechanize you must not mechanize they must not mechanize
V-ing form
I must not be mechanizing you must not be mechanizing she must not be mechanizing we must not be mechanizing you must not be mechanizing they must not be mechanizing
Perfect
I must not have mechanized you must not have mechanized she must not have mechanized we must not have mechanized you must not have mechanized they must not have mechanized
V-ing perfect
I must not have been mechanizing you must not have been mechanizing she must not have been mechanizing we must not have been mechanizing you must not have been mechanizing they must not have been mechanizing
Interrogative form
Simple form
must I mechanize? must you mechanize? must she mechanize? must we mechanize? must you mechanize? must they mechanize?
V-ing form
must I be mechanizing? must you be mechanizing? must she be mechanizing? must we be mechanizing? must you be mechanizing? must they be mechanizing?
Perfect
must I have mechanized? must you have mechanized? must she have mechanized? must we have mechanized? must you have mechanized? must they have mechanized?
V-ing perfect
must I have been mechanizing? must you have been mechanizing? must she have been mechanizing? must we have been mechanizing? must you have been mechanizing? must they have been mechanizing?
Interro-negative form
Simple form
must I not mechanize? must you not mechanize? must she not mechanize? must we not mechanize? must you not mechanize? must they not mechanize?
V-ing form
must I not be mechanizing? must you not be mechanizing? must she not be mechanizing? must we not be mechanizing? must you not be mechanizing? must they not be mechanizing?
Perfect
must I not have mechanized? must you not have mechanized? must she not have mechanized? must we not have mechanized? must you not have mechanized? must they not have mechanized?
V-ing perfect
must I not have been mechanizing? must you not have been mechanizing? must she not have been mechanizing? must we not have been mechanizing? must you not have been mechanizing? must they not have been mechanizing?