English verb conjugation
MUST CHAGRIN

Regular verb: chagrin - chagrined - chagrined

Affirmation

Simple form	V-ing form
I must chagrin you must chagrin he must chagrin we must chagrin you must chagrin they must chagrin	I must be chagrining you must be chagrining he must be chagrining we must be chagrining you must be chagrining they must be chagrining
Perfect	V-ing perfect
I must have chagrined you must have chagrined he must have chagrined we must have chagrined you must have chagrined they must have chagrined	I must have been chagrining you must have been chagrining he must have been chagrining we must have been chagrining you must have been chagrining they must have been chagrining

Negation

Simple form	V-ing form
I mustn't chagrin you mustn't chagrin he mustn't chagrin we mustn't chagrin you mustn't chagrin they mustn't chagrin	I mustn't be chagrining you mustn't be chagrining he mustn't be chagrining we mustn't be chagrining you mustn't be chagrining they mustn't be chagrining
Perfect	V-ing perfect
I mustn't have chagrined you mustn't have chagrined he mustn't have chagrined we mustn't have chagrined you mustn't have chagrined they mustn't have chagrined	I mustn't have been chagrining you mustn't have been chagrining he mustn't have been chagrining we mustn't have been chagrining you mustn't have been chagrining they mustn't have been chagrining

Interrogative form

Simple form	V-ing form
must I chagrin? must you chagrin? must he chagrin? must we chagrin? must you chagrin? must they chagrin?	must I be chagrining? must you be chagrining? must he be chagrining? must we be chagrining? must you be chagrining? must they be chagrining?
Perfect	V-ing perfect
must I have chagrined? must you have chagrined? must he have chagrined? must we have chagrined? must you have chagrined? must they have chagrined?	must I have been chagrining? must you have been chagrining? must he have been chagrining? must we have been chagrining? must you have been chagrining? must they have been chagrining?

Interro-negative form

Simple form	V-ing form
mustn't I chagrin? mustn't you chagrin? mustn't he chagrin? mustn't we chagrin? mustn't you chagrin? mustn't they chagrin?	mustn't I be chagrining? mustn't you be chagrining? mustn't he be chagrining? mustn't we be chagrining? mustn't you be chagrining? mustn't they be chagrining?
Perfect	V-ing perfect
mustn't I have chagrined? mustn't you have chagrined? mustn't he have chagrined? mustn't we have chagrined? mustn't you have chagrined? mustn't they have chagrined?	mustn't I have been chagrining? mustn't you have been chagrining? mustn't he have been chagrining? mustn't we have been chagrining? mustn't you have been chagrining? mustn't they have been chagrining?