English verb conjugation
MUST EXCHANGE

Regular verb: exchange - exchanged - exchanged

Affirmation

Simple form	V-ing form
I must exchange you must exchange she must exchange we must exchange you must exchange they must exchange	I must be exchanging you must be exchanging she must be exchanging we must be exchanging you must be exchanging they must be exchanging
Perfect	V-ing perfect
I must have exchanged you must have exchanged she must have exchanged we must have exchanged you must have exchanged they must have exchanged	I must have been exchanging you must have been exchanging she must have been exchanging we must have been exchanging you must have been exchanging they must have been exchanging

Negation

Simple form	V-ing form
I must not exchange you must not exchange she must not exchange we must not exchange you must not exchange they must not exchange	I must not be exchanging you must not be exchanging she must not be exchanging we must not be exchanging you must not be exchanging they must not be exchanging
Perfect	V-ing perfect
I must not have exchanged you must not have exchanged she must not have exchanged we must not have exchanged you must not have exchanged they must not have exchanged	I must not have been exchanging you must not have been exchanging she must not have been exchanging we must not have been exchanging you must not have been exchanging they must not have been exchanging

Interrogative form

Simple form	V-ing form
must I exchange? must you exchange? must she exchange? must we exchange? must you exchange? must they exchange?	must I be exchanging? must you be exchanging? must she be exchanging? must we be exchanging? must you be exchanging? must they be exchanging?
Perfect	V-ing perfect
must I have exchanged? must you have exchanged? must she have exchanged? must we have exchanged? must you have exchanged? must they have exchanged?	must I have been exchanging? must you have been exchanging? must she have been exchanging? must we have been exchanging? must you have been exchanging? must they have been exchanging?

Interro-negative form

Simple form	V-ing form
must I not exchange? must you not exchange? must she not exchange? must we not exchange? must you not exchange? must they not exchange?	must I not be exchanging? must you not be exchanging? must she not be exchanging? must we not be exchanging? must you not be exchanging? must they not be exchanging?
Perfect	V-ing perfect
must I not have exchanged? must you not have exchanged? must she not have exchanged? must we not have exchanged? must you not have exchanged? must they not have exchanged?	must I not have been exchanging? must you not have been exchanging? must she not have been exchanging? must we not have been exchanging? must you not have been exchanging? must they not have been exchanging?