I could choreograph you could choreograph she could choreograph we could choreograph you could choreograph they could choreograph
V-ing form
I could be choreographing you could be choreographing she could be choreographing we could be choreographing you could be choreographing they could be choreographing
Perfect
I could have choreographed you could have choreographed she could have choreographed we could have choreographed you could have choreographed they could have choreographed
V-ing perfect
I could have been choreographing you could have been choreographing she could have been choreographing we could have been choreographing you could have been choreographing they could have been choreographing
Negation
Simple form
I couldn't choreograph you couldn't choreograph she couldn't choreograph we couldn't choreograph you couldn't choreograph they couldn't choreograph
V-ing form
I couldn't be choreographing you couldn't be choreographing she couldn't be choreographing we couldn't be choreographing you couldn't be choreographing they couldn't be choreographing
Perfect
I couldn't have choreographed you couldn't have choreographed she couldn't have choreographed we couldn't have choreographed you couldn't have choreographed they couldn't have choreographed
V-ing perfect
I couldn't have been choreographing you couldn't have been choreographing she couldn't have been choreographing we couldn't have been choreographing you couldn't have been choreographing they couldn't have been choreographing
Interrogative form
Simple form
could I choreograph? could you choreograph? could she choreograph? could we choreograph? could you choreograph? could they choreograph?
V-ing form
could I be choreographing? could you be choreographing? could she be choreographing? could we be choreographing? could you be choreographing? could they be choreographing?
Perfect
could I have choreographed? could you have choreographed? could she have choreographed? could we have choreographed? could you have choreographed? could they have choreographed?
V-ing perfect
could I have been choreographing? could you have been choreographing? could she have been choreographing? could we have been choreographing? could you have been choreographing? could they have been choreographing?
Interro-negative form
Simple form
couldn't I choreograph? couldn't you choreograph? couldn't she choreograph? couldn't we choreograph? couldn't you choreograph? couldn't they choreograph?
V-ing form
couldn't I be choreographing? couldn't you be choreographing? couldn't she be choreographing? couldn't we be choreographing? couldn't you be choreographing? couldn't they be choreographing?
Perfect
couldn't I have choreographed? couldn't you have choreographed? couldn't she have choreographed? couldn't we have choreographed? couldn't you have choreographed? couldn't they have choreographed?
V-ing perfect
couldn't I have been choreographing? couldn't you have been choreographing? couldn't she have been choreographing? couldn't we have been choreographing? couldn't you have been choreographing? couldn't they have been choreographing?