English verb conjugation
MUST MAR

Regular verb: mar - marred - marred

Affirmation

Simple form	V-ing form
I must mar you must mar she must mar we must mar you must mar they must mar	I must be marring you must be marring she must be marring we must be marring you must be marring they must be marring
Perfect	V-ing perfect
I must have marred you must have marred she must have marred we must have marred you must have marred they must have marred	I must have been marring you must have been marring she must have been marring we must have been marring you must have been marring they must have been marring

Negation

Simple form	V-ing form
I mustn't mar you mustn't mar she mustn't mar we mustn't mar you mustn't mar they mustn't mar	I mustn't be marring you mustn't be marring she mustn't be marring we mustn't be marring you mustn't be marring they mustn't be marring
Perfect	V-ing perfect
I mustn't have marred you mustn't have marred she mustn't have marred we mustn't have marred you mustn't have marred they mustn't have marred	I mustn't have been marring you mustn't have been marring she mustn't have been marring we mustn't have been marring you mustn't have been marring they mustn't have been marring

Interrogative form

Simple form	V-ing form
must I mar? must you mar? must she mar? must we mar? must you mar? must they mar?	must I be marring? must you be marring? must she be marring? must we be marring? must you be marring? must they be marring?
Perfect	V-ing perfect
must I have marred? must you have marred? must she have marred? must we have marred? must you have marred? must they have marred?	must I have been marring? must you have been marring? must she have been marring? must we have been marring? must you have been marring? must they have been marring?

Interro-negative form

Simple form	V-ing form
mustn't I mar? mustn't you mar? mustn't she mar? mustn't we mar? mustn't you mar? mustn't they mar?	mustn't I be marring? mustn't you be marring? mustn't she be marring? mustn't we be marring? mustn't you be marring? mustn't they be marring?
Perfect	V-ing perfect
mustn't I have marred? mustn't you have marred? mustn't she have marred? mustn't we have marred? mustn't you have marred? mustn't they have marred?	mustn't I have been marring? mustn't you have been marring? mustn't she have been marring? mustn't we have been marring? mustn't you have been marring? mustn't they have been marring?