English verb conjugation
COULD ROCK

Regular verb: rock - rocked - rocked

Affirmation

Simple form	V-ing form
I could rock you could rock he could rock we could rock you could rock they could rock	I could be rocking you could be rocking he could be rocking we could be rocking you could be rocking they could be rocking
Perfect	V-ing perfect
I could have rocked you could have rocked he could have rocked we could have rocked you could have rocked they could have rocked	I could have been rocking you could have been rocking he could have been rocking we could have been rocking you could have been rocking they could have been rocking

Negation

Simple form	V-ing form
I could not rock you could not rock he could not rock we could not rock you could not rock they could not rock	I could not be rocking you could not be rocking he could not be rocking we could not be rocking you could not be rocking they could not be rocking
Perfect	V-ing perfect
I could not have rocked you could not have rocked he could not have rocked we could not have rocked you could not have rocked they could not have rocked	I could not have been rocking you could not have been rocking he could not have been rocking we could not have been rocking you could not have been rocking they could not have been rocking

Interrogative form

Simple form	V-ing form
could I rock? could you rock? could he rock? could we rock? could you rock? could they rock?	could I be rocking? could you be rocking? could he be rocking? could we be rocking? could you be rocking? could they be rocking?
Perfect	V-ing perfect
could I have rocked? could you have rocked? could he have rocked? could we have rocked? could you have rocked? could they have rocked?	could I have been rocking? could you have been rocking? could he have been rocking? could we have been rocking? could you have been rocking? could they have been rocking?

Interro-negative form

Simple form	V-ing form
could I not rock? could you not rock? could he not rock? could we not rock? could you not rock? could they not rock?	could I not be rocking? could you not be rocking? could he not be rocking? could we not be rocking? could you not be rocking? could they not be rocking?
Perfect	V-ing perfect
could I not have rocked? could you not have rocked? could he not have rocked? could we not have rocked? could you not have rocked? could they not have rocked?	could I not have been rocking? could you not have been rocking? could he not have been rocking? could we not have been rocking? could you not have been rocking? could they not have been rocking?