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