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