I could stage-manage you could stage-manage he could stage-manage we could stage-manage you could stage-manage they could stage-manage
V-ing form
I could be stage-managing you could be stage-managing he could be stage-managing we could be stage-managing you could be stage-managing they could be stage-managing
Perfect
I could have stage-managed you could have stage-managed he could have stage-managed we could have stage-managed you could have stage-managed they could have stage-managed
V-ing perfect
I could have been stage-managing you could have been stage-managing he could have been stage-managing we could have been stage-managing you could have been stage-managing they could have been stage-managing
Negation
Simple form
I could not stage-manage you could not stage-manage he could not stage-manage we could not stage-manage you could not stage-manage they could not stage-manage
V-ing form
I could not be stage-managing you could not be stage-managing he could not be stage-managing we could not be stage-managing you could not be stage-managing they could not be stage-managing
Perfect
I could not have stage-managed you could not have stage-managed he could not have stage-managed we could not have stage-managed you could not have stage-managed they could not have stage-managed
V-ing perfect
I could not have been stage-managing you could not have been stage-managing he could not have been stage-managing we could not have been stage-managing you could not have been stage-managing they could not have been stage-managing
Interrogative form
Simple form
could I stage-manage? could you stage-manage? could he stage-manage? could we stage-manage? could you stage-manage? could they stage-manage?
V-ing form
could I be stage-managing? could you be stage-managing? could he be stage-managing? could we be stage-managing? could you be stage-managing? could they be stage-managing?
Perfect
could I have stage-managed? could you have stage-managed? could he have stage-managed? could we have stage-managed? could you have stage-managed? could they have stage-managed?
V-ing perfect
could I have been stage-managing? could you have been stage-managing? could he have been stage-managing? could we have been stage-managing? could you have been stage-managing? could they have been stage-managing?
Interro-negative form
Simple form
could I not stage-manage? could you not stage-manage? could he not stage-manage? could we not stage-manage? could you not stage-manage? could they not stage-manage?
V-ing form
could I not be stage-managing? could you not be stage-managing? could he not be stage-managing? could we not be stage-managing? could you not be stage-managing? could they not be stage-managing?
Perfect
could I not have stage-managed? could you not have stage-managed? could he not have stage-managed? could we not have stage-managed? could you not have stage-managed? could they not have stage-managed?
V-ing perfect
could I not have been stage-managing? could you not have been stage-managing? could he not have been stage-managing? could we not have been stage-managing? could you not have been stage-managing? could they not have been stage-managing?