I must discharge you must discharge he must discharge we must discharge you must discharge they must discharge
V-ing form
I must be discharging you must be discharging he must be discharging we must be discharging you must be discharging they must be discharging
Perfect
I must have discharged you must have discharged he must have discharged we must have discharged you must have discharged they must have discharged
V-ing perfect
I must have been discharging you must have been discharging he must have been discharging we must have been discharging you must have been discharging they must have been discharging
Negation
Simple form
I mustn't discharge you mustn't discharge he mustn't discharge we mustn't discharge you mustn't discharge they mustn't discharge
V-ing form
I mustn't be discharging you mustn't be discharging he mustn't be discharging we mustn't be discharging you mustn't be discharging they mustn't be discharging
Perfect
I mustn't have discharged you mustn't have discharged he mustn't have discharged we mustn't have discharged you mustn't have discharged they mustn't have discharged
V-ing perfect
I mustn't have been discharging you mustn't have been discharging he mustn't have been discharging we mustn't have been discharging you mustn't have been discharging they mustn't have been discharging
Interrogative form
Simple form
must I discharge? must you discharge? must he discharge? must we discharge? must you discharge? must they discharge?
V-ing form
must I be discharging? must you be discharging? must he be discharging? must we be discharging? must you be discharging? must they be discharging?
Perfect
must I have discharged? must you have discharged? must he have discharged? must we have discharged? must you have discharged? must they have discharged?
V-ing perfect
must I have been discharging? must you have been discharging? must he have been discharging? must we have been discharging? must you have been discharging? must they have been discharging?
Interro-negative form
Simple form
mustn't I discharge? mustn't you discharge? mustn't he discharge? mustn't we discharge? mustn't you discharge? mustn't they discharge?
V-ing form
mustn't I be discharging? mustn't you be discharging? mustn't he be discharging? mustn't we be discharging? mustn't you be discharging? mustn't they be discharging?
Perfect
mustn't I have discharged? mustn't you have discharged? mustn't he have discharged? mustn't we have discharged? mustn't you have discharged? mustn't they have discharged?
V-ing perfect
mustn't I have been discharging? mustn't you have been discharging? mustn't he have been discharging? mustn't we have been discharging? mustn't you have been discharging? mustn't they have been discharging?