English verb conjugation
CAN PUCKER

Regular verb: pucker - puckered - puckered

Affirmation

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

Negation

Simple form	V-ing form
I cannot pucker you cannot pucker she cannot pucker we cannot pucker you cannot pucker they cannot pucker	I cannot be puckering you cannot be puckering she cannot be puckering we cannot be puckering you cannot be puckering they cannot be puckering
Perfect	V-ing perfect
I cannot have puckered you cannot have puckered she cannot have puckered we cannot have puckered you cannot have puckered they cannot have puckered	I cannot have been puckering you cannot have been puckering she cannot have been puckering we cannot have been puckering you cannot have been puckering they cannot have been puckering

Interrogative form

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

Interro-negative form

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