I could slam-dance you could slam-dance he could slam-dance we could slam-dance you could slam-dance they could slam-dance
V-ing form
I could be slam-dancing you could be slam-dancing he could be slam-dancing we could be slam-dancing you could be slam-dancing they could be slam-dancing
Perfect
I could have slam-danced you could have slam-danced he could have slam-danced we could have slam-danced you could have slam-danced they could have slam-danced
V-ing perfect
I could have been slam-dancing you could have been slam-dancing he could have been slam-dancing we could have been slam-dancing you could have been slam-dancing they could have been slam-dancing
Negation
Simple form
I couldn't slam-dance you couldn't slam-dance he couldn't slam-dance we couldn't slam-dance you couldn't slam-dance they couldn't slam-dance
V-ing form
I couldn't be slam-dancing you couldn't be slam-dancing he couldn't be slam-dancing we couldn't be slam-dancing you couldn't be slam-dancing they couldn't be slam-dancing
Perfect
I couldn't have slam-danced you couldn't have slam-danced he couldn't have slam-danced we couldn't have slam-danced you couldn't have slam-danced they couldn't have slam-danced
V-ing perfect
I couldn't have been slam-dancing you couldn't have been slam-dancing he couldn't have been slam-dancing we couldn't have been slam-dancing you couldn't have been slam-dancing they couldn't have been slam-dancing
Interrogative form
Simple form
could I slam-dance? could you slam-dance? could he slam-dance? could we slam-dance? could you slam-dance? could they slam-dance?
V-ing form
could I be slam-dancing? could you be slam-dancing? could he be slam-dancing? could we be slam-dancing? could you be slam-dancing? could they be slam-dancing?
Perfect
could I have slam-danced? could you have slam-danced? could he have slam-danced? could we have slam-danced? could you have slam-danced? could they have slam-danced?
V-ing perfect
could I have been slam-dancing? could you have been slam-dancing? could he have been slam-dancing? could we have been slam-dancing? could you have been slam-dancing? could they have been slam-dancing?
Interro-negative form
Simple form
couldn't I slam-dance? couldn't you slam-dance? couldn't he slam-dance? couldn't we slam-dance? couldn't you slam-dance? couldn't they slam-dance?
V-ing form
couldn't I be slam-dancing? couldn't you be slam-dancing? couldn't he be slam-dancing? couldn't we be slam-dancing? couldn't you be slam-dancing? couldn't they be slam-dancing?
Perfect
couldn't I have slam-danced? couldn't you have slam-danced? couldn't he have slam-danced? couldn't we have slam-danced? couldn't you have slam-danced? couldn't they have slam-danced?
V-ing perfect
couldn't I have been slam-dancing? couldn't you have been slam-dancing? couldn't he have been slam-dancing? couldn't we have been slam-dancing? couldn't you have been slam-dancing? couldn't they have been slam-dancing?