I can pucker you can pucker he can pucker we can pucker you can pucker they can pucker
V-ing form
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
I can have puckered you can have puckered he can have puckered we can have puckered you can have puckered they can have puckered
V-ing perfect
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
I can't pucker you can't pucker he can't pucker we can't pucker you can't pucker they can't pucker
V-ing form
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
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
V-ing perfect
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
can I pucker? can you pucker? can he pucker? can we pucker? can you pucker? can they pucker?
V-ing form
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
can I have puckered? can you have puckered? can he have puckered? can we have puckered? can you have puckered? can they have puckered?
V-ing perfect
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
can't I pucker? can't you pucker? can't he pucker? can't we pucker? can't you pucker? can't they pucker?
V-ing form
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
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?
V-ing perfect
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?