English verb conjugation
COULD VACILLATE

Regular verb: vacillate - vacillated - vacillated

Affirmation

Simple form	V-ing form
I could vacillate you could vacillate he could vacillate we could vacillate you could vacillate they could vacillate	I could be vacillating you could be vacillating he could be vacillating we could be vacillating you could be vacillating they could be vacillating
Perfect	V-ing perfect
I could have vacillated you could have vacillated he could have vacillated we could have vacillated you could have vacillated they could have vacillated	I could have been vacillating you could have been vacillating he could have been vacillating we could have been vacillating you could have been vacillating they could have been vacillating

Negation

Simple form	V-ing form
I could not vacillate you could not vacillate he could not vacillate we could not vacillate you could not vacillate they could not vacillate	I could not be vacillating you could not be vacillating he could not be vacillating we could not be vacillating you could not be vacillating they could not be vacillating
Perfect	V-ing perfect
I could not have vacillated you could not have vacillated he could not have vacillated we could not have vacillated you could not have vacillated they could not have vacillated	I could not have been vacillating you could not have been vacillating he could not have been vacillating we could not have been vacillating you could not have been vacillating they could not have been vacillating

Interrogative form

Simple form	V-ing form
could I vacillate? could you vacillate? could he vacillate? could we vacillate? could you vacillate? could they vacillate?	could I be vacillating? could you be vacillating? could he be vacillating? could we be vacillating? could you be vacillating? could they be vacillating?
Perfect	V-ing perfect
could I have vacillated? could you have vacillated? could he have vacillated? could we have vacillated? could you have vacillated? could they have vacillated?	could I have been vacillating? could you have been vacillating? could he have been vacillating? could we have been vacillating? could you have been vacillating? could they have been vacillating?

Interro-negative form

Simple form	V-ing form
could I not vacillate? could you not vacillate? could he not vacillate? could we not vacillate? could you not vacillate? could they not vacillate?	could I not be vacillating? could you not be vacillating? could he not be vacillating? could we not be vacillating? could you not be vacillating? could they not be vacillating?
Perfect	V-ing perfect
could I not have vacillated? could you not have vacillated? could he not have vacillated? could we not have vacillated? could you not have vacillated? could they not have vacillated?	could I not have been vacillating? could you not have been vacillating? could he not have been vacillating? could we not have been vacillating? could you not have been vacillating? could they not have been vacillating?