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 mustn't exchange you mustn't exchange she mustn't exchange we mustn't exchange you mustn't exchange they mustn't exchange	I mustn't be exchanging you mustn't be exchanging she mustn't be exchanging we mustn't be exchanging you mustn't be exchanging they mustn't be exchanging
Perfect	V-ing perfect
I mustn't have exchanged you mustn't have exchanged she mustn't have exchanged we mustn't have exchanged you mustn't have exchanged they mustn't have exchanged	I mustn't have been exchanging you mustn't have been exchanging she mustn't have been exchanging we mustn't have been exchanging you mustn't have been exchanging they mustn't 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
mustn't I exchange? mustn't you exchange? mustn't she exchange? mustn't we exchange? mustn't you exchange? mustn't they exchange?	mustn't I be exchanging? mustn't you be exchanging? mustn't she be exchanging? mustn't we be exchanging? mustn't you be exchanging? mustn't they be exchanging?
Perfect	V-ing perfect
mustn't I have exchanged? mustn't you have exchanged? mustn't she have exchanged? mustn't we have exchanged? mustn't you have exchanged? mustn't they have exchanged?	mustn't I have been exchanging? mustn't you have been exchanging? mustn't she have been exchanging? mustn't we have been exchanging? mustn't you have been exchanging? mustn't they have been exchanging?