I must prestimulate you must prestimulate he must prestimulate we must prestimulate you must prestimulate they must prestimulate
V-ing form
I must be prestimulating you must be prestimulating he must be prestimulating we must be prestimulating you must be prestimulating they must be prestimulating
Perfect
I must have prestimulated you must have prestimulated he must have prestimulated we must have prestimulated you must have prestimulated they must have prestimulated
V-ing perfect
I must have been prestimulating you must have been prestimulating he must have been prestimulating we must have been prestimulating you must have been prestimulating they must have been prestimulating
Negation
Simple form
I must not prestimulate you must not prestimulate he must not prestimulate we must not prestimulate you must not prestimulate they must not prestimulate
V-ing form
I must not be prestimulating you must not be prestimulating he must not be prestimulating we must not be prestimulating you must not be prestimulating they must not be prestimulating
Perfect
I must not have prestimulated you must not have prestimulated he must not have prestimulated we must not have prestimulated you must not have prestimulated they must not have prestimulated
V-ing perfect
I must not have been prestimulating you must not have been prestimulating he must not have been prestimulating we must not have been prestimulating you must not have been prestimulating they must not have been prestimulating
Interrogative form
Simple form
must I prestimulate? must you prestimulate? must he prestimulate? must we prestimulate? must you prestimulate? must they prestimulate?
V-ing form
must I be prestimulating? must you be prestimulating? must he be prestimulating? must we be prestimulating? must you be prestimulating? must they be prestimulating?
Perfect
must I have prestimulated? must you have prestimulated? must he have prestimulated? must we have prestimulated? must you have prestimulated? must they have prestimulated?
V-ing perfect
must I have been prestimulating? must you have been prestimulating? must he have been prestimulating? must we have been prestimulating? must you have been prestimulating? must they have been prestimulating?
Interro-negative form
Simple form
must I not prestimulate? must you not prestimulate? must he not prestimulate? must we not prestimulate? must you not prestimulate? must they not prestimulate?
V-ing form
must I not be prestimulating? must you not be prestimulating? must he not be prestimulating? must we not be prestimulating? must you not be prestimulating? must they not be prestimulating?
Perfect
must I not have prestimulated? must you not have prestimulated? must he not have prestimulated? must we not have prestimulated? must you not have prestimulated? must they not have prestimulated?
V-ing perfect
must I not have been prestimulating? must you not have been prestimulating? must he not have been prestimulating? must we not have been prestimulating? must you not have been prestimulating? must they not have been prestimulating?