English verb conjugation
COULD PUCKER

Regular verb: pucker - puckered - puckered

Affirmation

Simple form	V-ing form
I could pucker you could pucker he could pucker we could pucker you could pucker they could pucker	I could be puckering you could be puckering he could be puckering we could be puckering you could be puckering they could be puckering
Perfect	V-ing perfect
I could have puckered you could have puckered he could have puckered we could have puckered you could have puckered they could have puckered	I could have been puckering you could have been puckering he could have been puckering we could have been puckering you could have been puckering they could have been puckering

Negation

Simple form	V-ing form
I could not pucker you could not pucker he could not pucker we could not pucker you could not pucker they could not pucker	I could not be puckering you could not be puckering he could not be puckering we could not be puckering you could not be puckering they could not be puckering
Perfect	V-ing perfect
I could not have puckered you could not have puckered he could not have puckered we could not have puckered you could not have puckered they could not have puckered	I could not have been puckering you could not have been puckering he could not have been puckering we could not have been puckering you could not have been puckering they could not have been puckering

Interrogative form

Simple form	V-ing form
could I pucker? could you pucker? could he pucker? could we pucker? could you pucker? could they pucker?	could I be puckering? could you be puckering? could he be puckering? could we be puckering? could you be puckering? could they be puckering?
Perfect	V-ing perfect
could I have puckered? could you have puckered? could he have puckered? could we have puckered? could you have puckered? could they have puckered?	could I have been puckering? could you have been puckering? could he have been puckering? could we have been puckering? could you have been puckering? could they have been puckering?

Interro-negative form

Simple form	V-ing form
could I not pucker? could you not pucker? could he not pucker? could we not pucker? could you not pucker? could they not pucker?	could I not be puckering? could you not be puckering? could he not be puckering? could we not be puckering? could you not be puckering? could they not be puckering?
Perfect	V-ing perfect
could I not have puckered? could you not have puckered? could he not have puckered? could we not have puckered? could you not have puckered? could they not have puckered?	could I not have been puckering? could you not have been puckering? could he not have been puckering? could we not have been puckering? could you not have been puckering? could they not have been puckering?