Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must change change you must change change she must change change we must change change you must change change they must change change
V-ing form
I must be change changing you must be change changing she must be change changing we must be change changing you must be change changing they must be change changing
Perfect
I must have change changed you must have change changed she must have change changed we must have change changed you must have change changed they must have change changed
V-ing perfect
I must have been change changing you must have been change changing she must have been change changing we must have been change changing you must have been change changing they must have been change changing
Negation
Simple form
I must not change change you must not change change she must not change change we must not change change you must not change change they must not change change
V-ing form
I must not be change changing you must not be change changing she must not be change changing we must not be change changing you must not be change changing they must not be change changing
Perfect
I must not have change changed you must not have change changed she must not have change changed we must not have change changed you must not have change changed they must not have change changed
V-ing perfect
I must not have been change changing you must not have been change changing she must not have been change changing we must not have been change changing you must not have been change changing they must not have been change changing
Interrogative form
Simple form
must I change change? must you change change? must she change change? must we change change? must you change change? must they change change?
V-ing form
must I be change changing? must you be change changing? must she be change changing? must we be change changing? must you be change changing? must they be change changing?
Perfect
must I have change changed? must you have change changed? must she have change changed? must we have change changed? must you have change changed? must they have change changed?
V-ing perfect
must I have been change changing? must you have been change changing? must she have been change changing? must we have been change changing? must you have been change changing? must they have been change changing?
Interro-negative form
Simple form
must I not change change? must you not change change? must she not change change? must we not change change? must you not change change? must they not change change?
V-ing form
must I not be change changing? must you not be change changing? must she not be change changing? must we not be change changing? must you not be change changing? must they not be change changing?
Perfect
must I not have change changed? must you not have change changed? must she not have change changed? must we not have change changed? must you not have change changed? must they not have change changed?
V-ing perfect
must I not have been change changing? must you not have been change changing? must she not have been change changing? must we not have been change changing? must you not have been change changing? must they not have been change changing?