English verb conjugation
MUST MAR

Regular verb: mar - marred - marred

Affirmation

Simple form	V-ing form
I must mar you must mar he must mar we must mar you must mar they must mar	I must be marring you must be marring he 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 he 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 he 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 he 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 he 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 he 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 he 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 he mar? must we mar? must you mar? must they mar?	must I be marring? must you be marring? must he 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 he 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 he 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 he 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 he 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 he 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 he have been marring? mustn't we have been marring? mustn't you have been marring? mustn't they have been marring?