I must budge you must budge she must budge we must budge you must budge they must budge
V-ing form
I must be budging you must be budging she must be budging we must be budging you must be budging they must be budging
Perfect
I must have budged you must have budged she must have budged we must have budged you must have budged they must have budged
V-ing perfect
I must have been budging you must have been budging she must have been budging we must have been budging you must have been budging they must have been budging
Negation
Simple form
I mustn't budge you mustn't budge she mustn't budge we mustn't budge you mustn't budge they mustn't budge
V-ing form
I mustn't be budging you mustn't be budging she mustn't be budging we mustn't be budging you mustn't be budging they mustn't be budging
Perfect
I mustn't have budged you mustn't have budged she mustn't have budged we mustn't have budged you mustn't have budged they mustn't have budged
V-ing perfect
I mustn't have been budging you mustn't have been budging she mustn't have been budging we mustn't have been budging you mustn't have been budging they mustn't have been budging
Interrogative form
Simple form
must I budge? must you budge? must she budge? must we budge? must you budge? must they budge?
V-ing form
must I be budging? must you be budging? must she be budging? must we be budging? must you be budging? must they be budging?
Perfect
must I have budged? must you have budged? must she have budged? must we have budged? must you have budged? must they have budged?
V-ing perfect
must I have been budging? must you have been budging? must she have been budging? must we have been budging? must you have been budging? must they have been budging?
Interro-negative form
Simple form
mustn't I budge? mustn't you budge? mustn't she budge? mustn't we budge? mustn't you budge? mustn't they budge?
V-ing form
mustn't I be budging? mustn't you be budging? mustn't she be budging? mustn't we be budging? mustn't you be budging? mustn't they be budging?
Perfect
mustn't I have budged? mustn't you have budged? mustn't she have budged? mustn't we have budged? mustn't you have budged? mustn't they have budged?
V-ing perfect
mustn't I have been budging? mustn't you have been budging? mustn't she have been budging? mustn't we have been budging? mustn't you have been budging? mustn't they have been budging?