I could spray you could spray she could spray we could spray you could spray they could spray
V-ing form
I could be spraying you could be spraying she could be spraying we could be spraying you could be spraying they could be spraying
Perfect
I could have sprayed you could have sprayed she could have sprayed we could have sprayed you could have sprayed they could have sprayed
V-ing perfect
I could have been spraying you could have been spraying she could have been spraying we could have been spraying you could have been spraying they could have been spraying
Negation
Simple form
I could not spray you could not spray she could not spray we could not spray you could not spray they could not spray
V-ing form
I could not be spraying you could not be spraying she could not be spraying we could not be spraying you could not be spraying they could not be spraying
Perfect
I could not have sprayed you could not have sprayed she could not have sprayed we could not have sprayed you could not have sprayed they could not have sprayed
V-ing perfect
I could not have been spraying you could not have been spraying she could not have been spraying we could not have been spraying you could not have been spraying they could not have been spraying
Interrogative form
Simple form
could I spray? could you spray? could she spray? could we spray? could you spray? could they spray?
V-ing form
could I be spraying? could you be spraying? could she be spraying? could we be spraying? could you be spraying? could they be spraying?
Perfect
could I have sprayed? could you have sprayed? could she have sprayed? could we have sprayed? could you have sprayed? could they have sprayed?
V-ing perfect
could I have been spraying? could you have been spraying? could she have been spraying? could we have been spraying? could you have been spraying? could they have been spraying?
Interro-negative form
Simple form
could I not spray? could you not spray? could she not spray? could we not spray? could you not spray? could they not spray?
V-ing form
could I not be spraying? could you not be spraying? could she not be spraying? could we not be spraying? could you not be spraying? could they not be spraying?
Perfect
could I not have sprayed? could you not have sprayed? could she not have sprayed? could we not have sprayed? could you not have sprayed? could they not have sprayed?
V-ing perfect
could I not have been spraying? could you not have been spraying? could she not have been spraying? could we not have been spraying? could you not have been spraying? could they not have been spraying?