English verb conjugation
CAN FLUCTUATE

Regular verb: fluctuate - fluctuated - fluctuated

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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