must bulk
Regular verb: bulk - bulked- bulked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must bulk
you must bulk
she must bulk
we must bulk
you must bulk
they must bulk 	I must be bulking
you must be bulking
she must be bulking
we must be bulking
you must be bulking
they must be bulking	I must have bulked
you must have bulked
she must have bulked
we must have bulked
you must have bulked
they must have bulked	I must have been bulking
you must have been bulking
she must have been bulking
we must have been bulking
you must have been bulking
they must have been bulking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't bulk
you mustn't bulk
she mustn't bulk
we mustn't bulk
you mustn't bulk
they mustn't bulk 	I mustn't be bulking
you mustn't be bulking
she mustn't be bulking
we mustn't be bulking
you mustn't be bulking
they mustn't be bulking	I mustn't have bulked
you mustn't have bulked
she mustn't have bulked
we mustn't have bulked
you mustn't have bulked
they mustn't have bulked	I mustn't have been bulking
you mustn't have been bulking
she mustn't have been bulking
we mustn't have been bulking
you mustn't have been bulking
they mustn't have been bulking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I bulk?
must you bulk?
must she bulk?
must we bulk?
must you bulk?
must they bulk? 	must I be bulking?
must you be bulking?
must she be bulking?
must we be bulking?
must you be bulking?
must they be bulking? 	must I have bulked?
must you have bulked?
must she have bulked?
must we have bulked?
must you have bulked?
must they have bulked? 	must I have been bulking?
must you have been bulking?
must she have been bulking?
must we have been bulking?
must you have been bulking?
must they have been bulking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I bulk?
mustn't you bulk?
mustn't she bulk?
mustn't we bulk?
mustn't you bulk?
mustn't they bulk? 	mustn't I be bulking?
mustn't you be bulking?
mustn't she be bulking?
mustn't we be bulking?
mustn't you be bulking?
mustn't they be bulking? 	mustn't I have bulked?
mustn't you have bulked?
mustn't she have bulked?
mustn't we have bulked?
mustn't you have bulked?
mustn't they have bulked? 	mustn't I have been bulking?
mustn't you have been bulking?
mustn't she have been bulking?
mustn't we have been bulking?
mustn't you have been bulking?
mustn't they have been bulking?