English verb conjugation
MUST FLUCTUATE

Regular verb: fluctuate - fluctuated - fluctuated

Affirmation

Simple form	V-ing form
I must fluctuate you must fluctuate he must fluctuate we must fluctuate you must fluctuate they must fluctuate	I must be fluctuating you must be fluctuating he must be fluctuating we must be fluctuating you must be fluctuating they must be fluctuating
Perfect	V-ing perfect
I must have fluctuated you must have fluctuated he must have fluctuated we must have fluctuated you must have fluctuated they must have fluctuated	I must have been fluctuating you must have been fluctuating he must have been fluctuating we must have been fluctuating you must have been fluctuating they must have been fluctuating

Negation

Simple form	V-ing form
I mustn't fluctuate you mustn't fluctuate he mustn't fluctuate we mustn't fluctuate you mustn't fluctuate they mustn't fluctuate	I mustn't be fluctuating you mustn't be fluctuating he mustn't be fluctuating we mustn't be fluctuating you mustn't be fluctuating they mustn't be fluctuating
Perfect	V-ing perfect
I mustn't have fluctuated you mustn't have fluctuated he mustn't have fluctuated we mustn't have fluctuated you mustn't have fluctuated they mustn't have fluctuated	I mustn't have been fluctuating you mustn't have been fluctuating he mustn't have been fluctuating we mustn't have been fluctuating you mustn't have been fluctuating they mustn't have been fluctuating

Interrogative form

Simple form	V-ing form
must I fluctuate? must you fluctuate? must he fluctuate? must we fluctuate? must you fluctuate? must they fluctuate?	must I be fluctuating? must you be fluctuating? must he be fluctuating? must we be fluctuating? must you be fluctuating? must they be fluctuating?
Perfect	V-ing perfect
must I have fluctuated? must you have fluctuated? must he have fluctuated? must we have fluctuated? must you have fluctuated? must they have fluctuated?	must I have been fluctuating? must you have been fluctuating? must he have been fluctuating? must we have been fluctuating? must you have been fluctuating? must they have been fluctuating?

Interro-negative form

Simple form	V-ing form
mustn't I fluctuate? mustn't you fluctuate? mustn't he fluctuate? mustn't we fluctuate? mustn't you fluctuate? mustn't they fluctuate?	mustn't I be fluctuating? mustn't you be fluctuating? mustn't he be fluctuating? mustn't we be fluctuating? mustn't you be fluctuating? mustn't they be fluctuating?
Perfect	V-ing perfect
mustn't I have fluctuated? mustn't you have fluctuated? mustn't he have fluctuated? mustn't we have fluctuated? mustn't you have fluctuated? mustn't they have fluctuated?	mustn't I have been fluctuating? mustn't you have been fluctuating? mustn't he have been fluctuating? mustn't we have been fluctuating? mustn't you have been fluctuating? mustn't they have been fluctuating?