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