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 couldn't pucker you couldn't pucker he couldn't pucker we couldn't pucker you couldn't pucker they couldn't pucker	I couldn't be puckering you couldn't be puckering he couldn't be puckering we couldn't be puckering you couldn't be puckering they couldn't be puckering
Perfect	V-ing perfect
I couldn't have puckered you couldn't have puckered he couldn't have puckered we couldn't have puckered you couldn't have puckered they couldn't have puckered	I couldn't have been puckering you couldn't have been puckering he couldn't have been puckering we couldn't have been puckering you couldn't have been puckering they couldn't 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
couldn't I pucker? couldn't you pucker? couldn't he pucker? couldn't we pucker? couldn't you pucker? couldn't they pucker?	couldn't I be puckering? couldn't you be puckering? couldn't he be puckering? couldn't we be puckering? couldn't you be puckering? couldn't they be puckering?
Perfect	V-ing perfect
couldn't I have puckered? couldn't you have puckered? couldn't he have puckered? couldn't we have puckered? couldn't you have puckered? couldn't they have puckered?	couldn't I have been puckering? couldn't you have been puckering? couldn't he have been puckering? couldn't we have been puckering? couldn't you have been puckering? couldn't they have been puckering?