I could air-drop you could air-drop he could air-drop we could air-drop you could air-drop they could air-drop
V-ing form
I could be air-droping you could be air-droping he could be air-droping we could be air-droping you could be air-droping they could be air-droping
Perfect
I could have air-droped you could have air-droped he could have air-droped we could have air-droped you could have air-droped they could have air-droped
V-ing perfect
I could have been air-droping you could have been air-droping he could have been air-droping we could have been air-droping you could have been air-droping they could have been air-droping
Negation
Simple form
I could not air-drop you could not air-drop he could not air-drop we could not air-drop you could not air-drop they could not air-drop
V-ing form
I could not be air-droping you could not be air-droping he could not be air-droping we could not be air-droping you could not be air-droping they could not be air-droping
Perfect
I could not have air-droped you could not have air-droped he could not have air-droped we could not have air-droped you could not have air-droped they could not have air-droped
V-ing perfect
I could not have been air-droping you could not have been air-droping he could not have been air-droping we could not have been air-droping you could not have been air-droping they could not have been air-droping
Interrogative form
Simple form
could I air-drop? could you air-drop? could he air-drop? could we air-drop? could you air-drop? could they air-drop?
V-ing form
could I be air-droping? could you be air-droping? could he be air-droping? could we be air-droping? could you be air-droping? could they be air-droping?
Perfect
could I have air-droped? could you have air-droped? could he have air-droped? could we have air-droped? could you have air-droped? could they have air-droped?
V-ing perfect
could I have been air-droping? could you have been air-droping? could he have been air-droping? could we have been air-droping? could you have been air-droping? could they have been air-droping?
Interro-negative form
Simple form
could I not air-drop? could you not air-drop? could he not air-drop? could we not air-drop? could you not air-drop? could they not air-drop?
V-ing form
could I not be air-droping? could you not be air-droping? could he not be air-droping? could we not be air-droping? could you not be air-droping? could they not be air-droping?
Perfect
could I not have air-droped? could you not have air-droped? could he not have air-droped? could we not have air-droped? could you not have air-droped? could they not have air-droped?
V-ing perfect
could I not have been air-droping? could you not have been air-droping? could he not have been air-droping? could we not have been air-droping? could you not have been air-droping? could they not have been air-droping?