English verb conjugation
MUST UNDERSTOCK

Regular verb: understock - understocked - understocked

Affirmation

Simple form	V-ing form
I must understock you must understock he must understock we must understock you must understock they must understock	I must be understocking you must be understocking he must be understocking we must be understocking you must be understocking they must be understocking
Perfect	V-ing perfect
I must have understocked you must have understocked he must have understocked we must have understocked you must have understocked they must have understocked	I must have been understocking you must have been understocking he must have been understocking we must have been understocking you must have been understocking they must have been understocking

Negation

Simple form	V-ing form
I mustn't understock you mustn't understock he mustn't understock we mustn't understock you mustn't understock they mustn't understock	I mustn't be understocking you mustn't be understocking he mustn't be understocking we mustn't be understocking you mustn't be understocking they mustn't be understocking
Perfect	V-ing perfect
I mustn't have understocked you mustn't have understocked he mustn't have understocked we mustn't have understocked you mustn't have understocked they mustn't have understocked	I mustn't have been understocking you mustn't have been understocking he mustn't have been understocking we mustn't have been understocking you mustn't have been understocking they mustn't have been understocking

Interrogative form

Simple form	V-ing form
must I understock? must you understock? must he understock? must we understock? must you understock? must they understock?	must I be understocking? must you be understocking? must he be understocking? must we be understocking? must you be understocking? must they be understocking?
Perfect	V-ing perfect
must I have understocked? must you have understocked? must he have understocked? must we have understocked? must you have understocked? must they have understocked?	must I have been understocking? must you have been understocking? must he have been understocking? must we have been understocking? must you have been understocking? must they have been understocking?

Interro-negative form

Simple form	V-ing form
mustn't I understock? mustn't you understock? mustn't he understock? mustn't we understock? mustn't you understock? mustn't they understock?	mustn't I be understocking? mustn't you be understocking? mustn't he be understocking? mustn't we be understocking? mustn't you be understocking? mustn't they be understocking?
Perfect	V-ing perfect
mustn't I have understocked? mustn't you have understocked? mustn't he have understocked? mustn't we have understocked? mustn't you have understocked? mustn't they have understocked?	mustn't I have been understocking? mustn't you have been understocking? mustn't he have been understocking? mustn't we have been understocking? mustn't you have been understocking? mustn't they have been understocking?