English verb conjugation
COULD CROON

Regular verb: croon - crooned - crooned

Affirmation

Simple form	V-ing form
I could croon you could croon he could croon we could croon you could croon they could croon	I could be crooning you could be crooning he could be crooning we could be crooning you could be crooning they could be crooning
Perfect	V-ing perfect
I could have crooned you could have crooned he could have crooned we could have crooned you could have crooned they could have crooned	I could have been crooning you could have been crooning he could have been crooning we could have been crooning you could have been crooning they could have been crooning

Negation

Simple form	V-ing form
I could not croon you could not croon he could not croon we could not croon you could not croon they could not croon	I could not be crooning you could not be crooning he could not be crooning we could not be crooning you could not be crooning they could not be crooning
Perfect	V-ing perfect
I could not have crooned you could not have crooned he could not have crooned we could not have crooned you could not have crooned they could not have crooned	I could not have been crooning you could not have been crooning he could not have been crooning we could not have been crooning you could not have been crooning they could not have been crooning

Interrogative form

Simple form	V-ing form
could I croon? could you croon? could he croon? could we croon? could you croon? could they croon?	could I be crooning? could you be crooning? could he be crooning? could we be crooning? could you be crooning? could they be crooning?
Perfect	V-ing perfect
could I have crooned? could you have crooned? could he have crooned? could we have crooned? could you have crooned? could they have crooned?	could I have been crooning? could you have been crooning? could he have been crooning? could we have been crooning? could you have been crooning? could they have been crooning?

Interro-negative form

Simple form	V-ing form
could I not croon? could you not croon? could he not croon? could we not croon? could you not croon? could they not croon?	could I not be crooning? could you not be crooning? could he not be crooning? could we not be crooning? could you not be crooning? could they not be crooning?
Perfect	V-ing perfect
could I not have crooned? could you not have crooned? could he not have crooned? could we not have crooned? could you not have crooned? could they not have crooned?	could I not have been crooning? could you not have been crooning? could he not have been crooning? could we not have been crooning? could you not have been crooning? could they not have been crooning?