I must manipulate you must manipulate he must manipulate we must manipulate you must manipulate they must manipulate
V-ing form
I must be manipulating you must be manipulating he must be manipulating we must be manipulating you must be manipulating they must be manipulating
Perfect
I must have manipulated you must have manipulated he must have manipulated we must have manipulated you must have manipulated they must have manipulated
V-ing perfect
I must have been manipulating you must have been manipulating he must have been manipulating we must have been manipulating you must have been manipulating they must have been manipulating
Negation
Simple form
I must not manipulate you must not manipulate he must not manipulate we must not manipulate you must not manipulate they must not manipulate
V-ing form
I must not be manipulating you must not be manipulating he must not be manipulating we must not be manipulating you must not be manipulating they must not be manipulating
Perfect
I must not have manipulated you must not have manipulated he must not have manipulated we must not have manipulated you must not have manipulated they must not have manipulated
V-ing perfect
I must not have been manipulating you must not have been manipulating he must not have been manipulating we must not have been manipulating you must not have been manipulating they must not have been manipulating
Interrogative form
Simple form
must I manipulate? must you manipulate? must he manipulate? must we manipulate? must you manipulate? must they manipulate?
V-ing form
must I be manipulating? must you be manipulating? must he be manipulating? must we be manipulating? must you be manipulating? must they be manipulating?
Perfect
must I have manipulated? must you have manipulated? must he have manipulated? must we have manipulated? must you have manipulated? must they have manipulated?
V-ing perfect
must I have been manipulating? must you have been manipulating? must he have been manipulating? must we have been manipulating? must you have been manipulating? must they have been manipulating?
Interro-negative form
Simple form
must I not manipulate? must you not manipulate? must he not manipulate? must we not manipulate? must you not manipulate? must they not manipulate?
V-ing form
must I not be manipulating? must you not be manipulating? must he not be manipulating? must we not be manipulating? must you not be manipulating? must they not be manipulating?
Perfect
must I not have manipulated? must you not have manipulated? must he not have manipulated? must we not have manipulated? must you not have manipulated? must they not have manipulated?
V-ing perfect
must I not have been manipulating? must you not have been manipulating? must he not have been manipulating? must we not have been manipulating? must you not have been manipulating? must they not have been manipulating?