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