English verb conjugation
CAN PUCKER

Regular verb: pucker - puckered - puckered

Affirmation

Simple form	V-ing form
I can pucker you can pucker he can pucker we can pucker you can pucker they can pucker	I can be puckering you can be puckering he 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 he 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 he 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 can't pucker you can't pucker he can't pucker we can't pucker you can't pucker they can't pucker	I can't be puckering you can't be puckering he can't be puckering we can't be puckering you can't be puckering they can't be puckering
Perfect	V-ing perfect
I can't have puckered you can't have puckered he can't have puckered we can't have puckered you can't have puckered they can't have puckered	I can't have been puckering you can't have been puckering he can't have been puckering we can't have been puckering you can't have been puckering they can't have been puckering

Interrogative form

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