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