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