I must prod you must prod she must prod we must prod you must prod they must prod
V-ing form
I must be prodding you must be prodding she must be prodding we must be prodding you must be prodding they must be prodding
Perfect
I must have prodded you must have prodded she 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 she 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 she 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 she 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 she 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 she 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 she prod? must we prod? must you prod? must they prod?
V-ing form
must I be prodding? must you be prodding? must she be prodding? must we be prodding? must you be prodding? must they be prodding?
Perfect
must I have prodded? must you have prodded? must she 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 she 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 she 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 she 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 she 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 she have been prodding? mustn't we have been prodding? mustn't you have been prodding? mustn't they have been prodding?