must jerk
Regular verb: jerk - jerked- jerked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must jerk
you must jerk
she must jerk
we must jerk
you must jerk
they must jerk 	I must be jerking
you must be jerking
she must be jerking
we must be jerking
you must be jerking
they must be jerking	I must have jerked
you must have jerked
she must have jerked
we must have jerked
you must have jerked
they must have jerked	I must have been jerking
you must have been jerking
she must have been jerking
we must have been jerking
you must have been jerking
they must have been jerking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't jerk
you mustn't jerk
she mustn't jerk
we mustn't jerk
you mustn't jerk
they mustn't jerk 	I mustn't be jerking
you mustn't be jerking
she mustn't be jerking
we mustn't be jerking
you mustn't be jerking
they mustn't be jerking	I mustn't have jerked
you mustn't have jerked
she mustn't have jerked
we mustn't have jerked
you mustn't have jerked
they mustn't have jerked	I mustn't have been jerking
you mustn't have been jerking
she mustn't have been jerking
we mustn't have been jerking
you mustn't have been jerking
they mustn't have been jerking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I jerk?
must you jerk?
must she jerk?
must we jerk?
must you jerk?
must they jerk? 	must I be jerking?
must you be jerking?
must she be jerking?
must we be jerking?
must you be jerking?
must they be jerking? 	must I have jerked?
must you have jerked?
must she have jerked?
must we have jerked?
must you have jerked?
must they have jerked? 	must I have been jerking?
must you have been jerking?
must she have been jerking?
must we have been jerking?
must you have been jerking?
must they have been jerking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I jerk?
mustn't you jerk?
mustn't she jerk?
mustn't we jerk?
mustn't you jerk?
mustn't they jerk? 	mustn't I be jerking?
mustn't you be jerking?
mustn't she be jerking?
mustn't we be jerking?
mustn't you be jerking?
mustn't they be jerking? 	mustn't I have jerked?
mustn't you have jerked?
mustn't she have jerked?
mustn't we have jerked?
mustn't you have jerked?
mustn't they have jerked? 	mustn't I have been jerking?
mustn't you have been jerking?
mustn't she have been jerking?
mustn't we have been jerking?
mustn't you have been jerking?
mustn't they have been jerking?