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