I could begrime you could begrime she could begrime we could begrime you could begrime they could begrime
V-ing form
I could be begriming you could be begriming she could be begriming we could be begriming you could be begriming they could be begriming
Perfect
I could have begrimed you could have begrimed she could have begrimed we could have begrimed you could have begrimed they could have begrimed
V-ing perfect
I could have been begriming you could have been begriming she could have been begriming we could have been begriming you could have been begriming they could have been begriming
Negation
Simple form
I couldn't begrime you couldn't begrime she couldn't begrime we couldn't begrime you couldn't begrime they couldn't begrime
V-ing form
I couldn't be begriming you couldn't be begriming she couldn't be begriming we couldn't be begriming you couldn't be begriming they couldn't be begriming
Perfect
I couldn't have begrimed you couldn't have begrimed she couldn't have begrimed we couldn't have begrimed you couldn't have begrimed they couldn't have begrimed
V-ing perfect
I couldn't have been begriming you couldn't have been begriming she couldn't have been begriming we couldn't have been begriming you couldn't have been begriming they couldn't have been begriming
Interrogative form
Simple form
could I begrime? could you begrime? could she begrime? could we begrime? could you begrime? could they begrime?
V-ing form
could I be begriming? could you be begriming? could she be begriming? could we be begriming? could you be begriming? could they be begriming?
Perfect
could I have begrimed? could you have begrimed? could she have begrimed? could we have begrimed? could you have begrimed? could they have begrimed?
V-ing perfect
could I have been begriming? could you have been begriming? could she have been begriming? could we have been begriming? could you have been begriming? could they have been begriming?
Interro-negative form
Simple form
couldn't I begrime? couldn't you begrime? couldn't she begrime? couldn't we begrime? couldn't you begrime? couldn't they begrime?
V-ing form
couldn't I be begriming? couldn't you be begriming? couldn't she be begriming? couldn't we be begriming? couldn't you be begriming? couldn't they be begriming?
Perfect
couldn't I have begrimed? couldn't you have begrimed? couldn't she have begrimed? couldn't we have begrimed? couldn't you have begrimed? couldn't they have begrimed?
V-ing perfect
couldn't I have been begriming? couldn't you have been begriming? couldn't she have been begriming? couldn't we have been begriming? couldn't you have been begriming? couldn't they have been begriming?