I can grope you can grope she can grope we can grope you can grope they can grope
V-ing form
I can be groping you can be groping she can be groping we can be groping you can be groping they can be groping
Perfect
I can have groped you can have groped she can have groped we can have groped you can have groped they can have groped
V-ing perfect
I can have been groping you can have been groping she can have been groping we can have been groping you can have been groping they can have been groping
Negation
Simple form
I can't grope you can't grope she can't grope we can't grope you can't grope they can't grope
V-ing form
I can't be groping you can't be groping she can't be groping we can't be groping you can't be groping they can't be groping
Perfect
I can't have groped you can't have groped she can't have groped we can't have groped you can't have groped they can't have groped
V-ing perfect
I can't have been groping you can't have been groping she can't have been groping we can't have been groping you can't have been groping they can't have been groping
Interrogative form
Simple form
can I grope? can you grope? can she grope? can we grope? can you grope? can they grope?
V-ing form
can I be groping? can you be groping? can she be groping? can we be groping? can you be groping? can they be groping?
Perfect
can I have groped? can you have groped? can she have groped? can we have groped? can you have groped? can they have groped?
V-ing perfect
can I have been groping? can you have been groping? can she have been groping? can we have been groping? can you have been groping? can they have been groping?
Interro-negative form
Simple form
can't I grope? can't you grope? can't she grope? can't we grope? can't you grope? can't they grope?
V-ing form
can't I be groping? can't you be groping? can't she be groping? can't we be groping? can't you be groping? can't they be groping?
Perfect
can't I have groped? can't you have groped? can't she have groped? can't we have groped? can't you have groped? can't they have groped?
V-ing perfect
can't I have been groping? can't you have been groping? can't she have been groping? can't we have been groping? can't you have been groping? can't they have been groping?