I must press-gang you must press-gang she must press-gang we must press-gang you must press-gang they must press-gang
V-ing form
I must be press-ganging you must be press-ganging she must be press-ganging we must be press-ganging you must be press-ganging they must be press-ganging
Perfect
I must have press-ganged you must have press-ganged she must have press-ganged we must have press-ganged you must have press-ganged they must have press-ganged
V-ing perfect
I must have been press-ganging you must have been press-ganging she must have been press-ganging we must have been press-ganging you must have been press-ganging they must have been press-ganging
Negation
Simple form
I mustn't press-gang you mustn't press-gang she mustn't press-gang we mustn't press-gang you mustn't press-gang they mustn't press-gang
V-ing form
I mustn't be press-ganging you mustn't be press-ganging she mustn't be press-ganging we mustn't be press-ganging you mustn't be press-ganging they mustn't be press-ganging
Perfect
I mustn't have press-ganged you mustn't have press-ganged she mustn't have press-ganged we mustn't have press-ganged you mustn't have press-ganged they mustn't have press-ganged
V-ing perfect
I mustn't have been press-ganging you mustn't have been press-ganging she mustn't have been press-ganging we mustn't have been press-ganging you mustn't have been press-ganging they mustn't have been press-ganging
Interrogative form
Simple form
must I press-gang? must you press-gang? must she press-gang? must we press-gang? must you press-gang? must they press-gang?
V-ing form
must I be press-ganging? must you be press-ganging? must she be press-ganging? must we be press-ganging? must you be press-ganging? must they be press-ganging?
Perfect
must I have press-ganged? must you have press-ganged? must she have press-ganged? must we have press-ganged? must you have press-ganged? must they have press-ganged?
V-ing perfect
must I have been press-ganging? must you have been press-ganging? must she have been press-ganging? must we have been press-ganging? must you have been press-ganging? must they have been press-ganging?
Interro-negative form
Simple form
mustn't I press-gang? mustn't you press-gang? mustn't she press-gang? mustn't we press-gang? mustn't you press-gang? mustn't they press-gang?
V-ing form
mustn't I be press-ganging? mustn't you be press-ganging? mustn't she be press-ganging? mustn't we be press-ganging? mustn't you be press-ganging? mustn't they be press-ganging?
Perfect
mustn't I have press-ganged? mustn't you have press-ganged? mustn't she have press-ganged? mustn't we have press-ganged? mustn't you have press-ganged? mustn't they have press-ganged?
V-ing perfect
mustn't I have been press-ganging? mustn't you have been press-ganging? mustn't she have been press-ganging? mustn't we have been press-ganging? mustn't you have been press-ganging? mustn't they have been press-ganging?