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