I could begrime you could begrime he could begrime we could begrime you could begrime they could begrime
V-ing form
I could be begriming you could be begriming he could be begriming we could be begriming you could be begriming they could be begriming
Perfect
I could have begrimed you could have begrimed he 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 he 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 he 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 he 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 he 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 he 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 he begrime? could we begrime? could you begrime? could they begrime?
V-ing form
could I be begriming? could you be begriming? could he be begriming? could we be begriming? could you be begriming? could they be begriming?
Perfect
could I have begrimed? could you have begrimed? could he 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 he 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 he 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 he 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 he 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 he have been begriming? couldn't we have been begriming? couldn't you have been begriming? couldn't they have been begriming?