English verb conjugation
MUST BARRACK

Regular verb: barrack - barracked - barracked

Affirmation

Simple form	V-ing form
I must barrack you must barrack he must barrack we must barrack you must barrack they must barrack	I must be barracking you must be barracking he must be barracking we must be barracking you must be barracking they must be barracking
Perfect	V-ing perfect
I must have barracked you must have barracked he must have barracked we must have barracked you must have barracked they must have barracked	I must have been barracking you must have been barracking he must have been barracking we must have been barracking you must have been barracking they must have been barracking

Negation

Simple form	V-ing form
I mustn't barrack you mustn't barrack he mustn't barrack we mustn't barrack you mustn't barrack they mustn't barrack	I mustn't be barracking you mustn't be barracking he mustn't be barracking we mustn't be barracking you mustn't be barracking they mustn't be barracking
Perfect	V-ing perfect
I mustn't have barracked you mustn't have barracked he mustn't have barracked we mustn't have barracked you mustn't have barracked they mustn't have barracked	I mustn't have been barracking you mustn't have been barracking he mustn't have been barracking we mustn't have been barracking you mustn't have been barracking they mustn't have been barracking

Interrogative form

Simple form	V-ing form
must I barrack? must you barrack? must he barrack? must we barrack? must you barrack? must they barrack?	must I be barracking? must you be barracking? must he be barracking? must we be barracking? must you be barracking? must they be barracking?
Perfect	V-ing perfect
must I have barracked? must you have barracked? must he have barracked? must we have barracked? must you have barracked? must they have barracked?	must I have been barracking? must you have been barracking? must he have been barracking? must we have been barracking? must you have been barracking? must they have been barracking?

Interro-negative form

Simple form	V-ing form
mustn't I barrack? mustn't you barrack? mustn't he barrack? mustn't we barrack? mustn't you barrack? mustn't they barrack?	mustn't I be barracking? mustn't you be barracking? mustn't he be barracking? mustn't we be barracking? mustn't you be barracking? mustn't they be barracking?
Perfect	V-ing perfect
mustn't I have barracked? mustn't you have barracked? mustn't he have barracked? mustn't we have barracked? mustn't you have barracked? mustn't they have barracked?	mustn't I have been barracking? mustn't you have been barracking? mustn't he have been barracking? mustn't we have been barracking? mustn't you have been barracking? mustn't they have been barracking?