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