I could pucker you could pucker she could pucker we could pucker you could pucker they could pucker
V-ing form
I could be puckering you could be puckering she could be puckering we could be puckering you could be puckering they could be puckering
Perfect
I could have puckered you could have puckered she could have puckered we could have puckered you could have puckered they could have puckered
V-ing perfect
I could have been puckering you could have been puckering she could have been puckering we could have been puckering you could have been puckering they could have been puckering
Negation
Simple form
I couldn't pucker you couldn't pucker she couldn't pucker we couldn't pucker you couldn't pucker they couldn't pucker
V-ing form
I couldn't be puckering you couldn't be puckering she couldn't be puckering we couldn't be puckering you couldn't be puckering they couldn't be puckering
Perfect
I couldn't have puckered you couldn't have puckered she couldn't have puckered we couldn't have puckered you couldn't have puckered they couldn't have puckered
V-ing perfect
I couldn't have been puckering you couldn't have been puckering she 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
could I pucker? could you pucker? could she pucker? could we pucker? could you pucker? could they pucker?
V-ing form
could I be puckering? could you be puckering? could she be puckering? could we be puckering? could you be puckering? could they be puckering?
Perfect
could I have puckered? could you have puckered? could she have puckered? could we have puckered? could you have puckered? could they have puckered?
V-ing perfect
could I have been puckering? could you have been puckering? could she have been puckering? could we have been puckering? could you have been puckering? could they have been puckering?
Interro-negative form
Simple form
couldn't I pucker? couldn't you pucker? couldn't she pucker? couldn't we pucker? couldn't you pucker? couldn't they pucker?
V-ing form
couldn't I be puckering? couldn't you be puckering? couldn't she be puckering? couldn't we be puckering? couldn't you be puckering? couldn't they be puckering?
Perfect
couldn't I have puckered? couldn't you have puckered? couldn't she have puckered? couldn't we have puckered? couldn't you have puckered? couldn't they have puckered?
V-ing perfect
couldn't I have been puckering? couldn't you have been puckering? couldn't she have been puckering? couldn't we have been puckering? couldn't you have been puckering? couldn't they have been puckering?