I must bench you must bench he must bench we must bench you must bench they must bench
V-ing form
I must be benching you must be benching he must be benching we must be benching you must be benching they must be benching
Perfect
I must have benched you must have benched he must have benched we must have benched you must have benched they must have benched
V-ing perfect
I must have been benching you must have been benching he must have been benching we must have been benching you must have been benching they must have been benching
Negation
Simple form
I must not bench you must not bench he must not bench we must not bench you must not bench they must not bench
V-ing form
I must not be benching you must not be benching he must not be benching we must not be benching you must not be benching they must not be benching
Perfect
I must not have benched you must not have benched he must not have benched we must not have benched you must not have benched they must not have benched
V-ing perfect
I must not have been benching you must not have been benching he must not have been benching we must not have been benching you must not have been benching they must not have been benching
Interrogative form
Simple form
must I bench? must you bench? must he bench? must we bench? must you bench? must they bench?
V-ing form
must I be benching? must you be benching? must he be benching? must we be benching? must you be benching? must they be benching?
Perfect
must I have benched? must you have benched? must he have benched? must we have benched? must you have benched? must they have benched?
V-ing perfect
must I have been benching? must you have been benching? must he have been benching? must we have been benching? must you have been benching? must they have been benching?
Interro-negative form
Simple form
must I not bench? must you not bench? must he not bench? must we not bench? must you not bench? must they not bench?
V-ing form
must I not be benching? must you not be benching? must he not be benching? must we not be benching? must you not be benching? must they not be benching?
Perfect
must I not have benched? must you not have benched? must he not have benched? must we not have benched? must you not have benched? must they not have benched?
V-ing perfect
must I not have been benching? must you not have been benching? must he not have been benching? must we not have been benching? must you not have been benching? must they not have been benching?