English verb conjugation
MUST ZIGZAG

Regular verb: zigzag - zigzagged - zigzagged

Affirmation

Simple form	V-ing form
I must zigzag you must zigzag he must zigzag we must zigzag you must zigzag they must zigzag	I must be zigzagging you must be zigzagging he must be zigzagging we must be zigzagging you must be zigzagging they must be zigzagging
Perfect	V-ing perfect
I must have zigzagged you must have zigzagged he must have zigzagged we must have zigzagged you must have zigzagged they must have zigzagged	I must have been zigzagging you must have been zigzagging he must have been zigzagging we must have been zigzagging you must have been zigzagging they must have been zigzagging

Negation

Simple form	V-ing form
I mustn't zigzag you mustn't zigzag he mustn't zigzag we mustn't zigzag you mustn't zigzag they mustn't zigzag	I mustn't be zigzagging you mustn't be zigzagging he mustn't be zigzagging we mustn't be zigzagging you mustn't be zigzagging they mustn't be zigzagging
Perfect	V-ing perfect
I mustn't have zigzagged you mustn't have zigzagged he mustn't have zigzagged we mustn't have zigzagged you mustn't have zigzagged they mustn't have zigzagged	I mustn't have been zigzagging you mustn't have been zigzagging he mustn't have been zigzagging we mustn't have been zigzagging you mustn't have been zigzagging they mustn't have been zigzagging

Interrogative form

Simple form	V-ing form
must I zigzag? must you zigzag? must he zigzag? must we zigzag? must you zigzag? must they zigzag?	must I be zigzagging? must you be zigzagging? must he be zigzagging? must we be zigzagging? must you be zigzagging? must they be zigzagging?
Perfect	V-ing perfect
must I have zigzagged? must you have zigzagged? must he have zigzagged? must we have zigzagged? must you have zigzagged? must they have zigzagged?	must I have been zigzagging? must you have been zigzagging? must he have been zigzagging? must we have been zigzagging? must you have been zigzagging? must they have been zigzagging?

Interro-negative form

Simple form	V-ing form
mustn't I zigzag? mustn't you zigzag? mustn't he zigzag? mustn't we zigzag? mustn't you zigzag? mustn't they zigzag?	mustn't I be zigzagging? mustn't you be zigzagging? mustn't he be zigzagging? mustn't we be zigzagging? mustn't you be zigzagging? mustn't they be zigzagging?
Perfect	V-ing perfect
mustn't I have zigzagged? mustn't you have zigzagged? mustn't he have zigzagged? mustn't we have zigzagged? mustn't you have zigzagged? mustn't they have zigzagged?	mustn't I have been zigzagging? mustn't you have been zigzagging? mustn't he have been zigzagging? mustn't we have been zigzagging? mustn't you have been zigzagging? mustn't they have been zigzagging?