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 must not fluctuate you must not fluctuate he must not fluctuate we must not fluctuate you must not fluctuate they must not fluctuate	I must not be fluctuating you must not be fluctuating he must not be fluctuating we must not be fluctuating you must not be fluctuating they must not be fluctuating
Perfect	V-ing perfect
I must not have fluctuated you must not have fluctuated he must not have fluctuated we must not have fluctuated you must not have fluctuated they must not have fluctuated	I must not have been fluctuating you must not have been fluctuating he must not have been fluctuating we must not have been fluctuating you must not have been fluctuating they must not 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
must I not fluctuate? must you not fluctuate? must he not fluctuate? must we not fluctuate? must you not fluctuate? must they not fluctuate?	must I not be fluctuating? must you not be fluctuating? must he not be fluctuating? must we not be fluctuating? must you not be fluctuating? must they not be fluctuating?
Perfect	V-ing perfect
must I not have fluctuated? must you not have fluctuated? must he not have fluctuated? must we not have fluctuated? must you not have fluctuated? must they not have fluctuated?	must I not have been fluctuating? must you not have been fluctuating? must he not have been fluctuating? must we not have been fluctuating? must you not have been fluctuating? must they not have been fluctuating?