English verb conjugation
COULD ROCK

Regular verb: rock - rocked - rocked

Affirmation

Simple form	V-ing form
I could rock you could rock she could rock we could rock you could rock they could rock	I could be rocking you could be rocking she 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 she 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 she 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 couldn't rock you couldn't rock she couldn't rock we couldn't rock you couldn't rock they couldn't rock	I couldn't be rocking you couldn't be rocking she couldn't be rocking we couldn't be rocking you couldn't be rocking they couldn't be rocking
Perfect	V-ing perfect
I couldn't have rocked you couldn't have rocked she couldn't have rocked we couldn't have rocked you couldn't have rocked they couldn't have rocked	I couldn't have been rocking you couldn't have been rocking she couldn't have been rocking we couldn't have been rocking you couldn't have been rocking they couldn't have been rocking

Interrogative form

Simple form	V-ing form
could I rock? could you rock? could she rock? could we rock? could you rock? could they rock?	could I be rocking? could you be rocking? could she 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 she 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 she 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
couldn't I rock? couldn't you rock? couldn't she rock? couldn't we rock? couldn't you rock? couldn't they rock?	couldn't I be rocking? couldn't you be rocking? couldn't she be rocking? couldn't we be rocking? couldn't you be rocking? couldn't they be rocking?
Perfect	V-ing perfect
couldn't I have rocked? couldn't you have rocked? couldn't she have rocked? couldn't we have rocked? couldn't you have rocked? couldn't they have rocked?	couldn't I have been rocking? couldn't you have been rocking? couldn't she have been rocking? couldn't we have been rocking? couldn't you have been rocking? couldn't they have been rocking?