I must sashay you must sashay he must sashay we must sashay you must sashay they must sashay
V-ing form
I must be sashaying you must be sashaying he must be sashaying we must be sashaying you must be sashaying they must be sashaying
Perfect
I must have sashayed you must have sashayed he must have sashayed we must have sashayed you must have sashayed they must have sashayed
V-ing perfect
I must have been sashaying you must have been sashaying he must have been sashaying we must have been sashaying you must have been sashaying they must have been sashaying
Negation
Simple form
I must not sashay you must not sashay he must not sashay we must not sashay you must not sashay they must not sashay
V-ing form
I must not be sashaying you must not be sashaying he must not be sashaying we must not be sashaying you must not be sashaying they must not be sashaying
Perfect
I must not have sashayed you must not have sashayed he must not have sashayed we must not have sashayed you must not have sashayed they must not have sashayed
V-ing perfect
I must not have been sashaying you must not have been sashaying he must not have been sashaying we must not have been sashaying you must not have been sashaying they must not have been sashaying
Interrogative form
Simple form
must I sashay? must you sashay? must he sashay? must we sashay? must you sashay? must they sashay?
V-ing form
must I be sashaying? must you be sashaying? must he be sashaying? must we be sashaying? must you be sashaying? must they be sashaying?
Perfect
must I have sashayed? must you have sashayed? must he have sashayed? must we have sashayed? must you have sashayed? must they have sashayed?
V-ing perfect
must I have been sashaying? must you have been sashaying? must he have been sashaying? must we have been sashaying? must you have been sashaying? must they have been sashaying?
Interro-negative form
Simple form
must I not sashay? must you not sashay? must he not sashay? must we not sashay? must you not sashay? must they not sashay?
V-ing form
must I not be sashaying? must you not be sashaying? must he not be sashaying? must we not be sashaying? must you not be sashaying? must they not be sashaying?
Perfect
must I not have sashayed? must you not have sashayed? must he not have sashayed? must we not have sashayed? must you not have sashayed? must they not have sashayed?
V-ing perfect
must I not have been sashaying? must you not have been sashaying? must he not have been sashaying? must we not have been sashaying? must you not have been sashaying? must they not have been sashaying?