English verb conjugation
MUST JERK

Regular verb: jerk - jerked - jerked

Affirmation

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