English verb conjugation
MUST DECOUPLE

Regular verb: decouple - decoupled - decoupled

Affirmation

Simple form	V-ing form
I must decouple you must decouple she must decouple we must decouple you must decouple they must decouple	I must be decoupling you must be decoupling she must be decoupling we must be decoupling you must be decoupling they must be decoupling
Perfect	V-ing perfect
I must have decoupled you must have decoupled she must have decoupled we must have decoupled you must have decoupled they must have decoupled	I must have been decoupling you must have been decoupling she must have been decoupling we must have been decoupling you must have been decoupling they must have been decoupling

Negation

Simple form	V-ing form
I mustn't decouple you mustn't decouple she mustn't decouple we mustn't decouple you mustn't decouple they mustn't decouple	I mustn't be decoupling you mustn't be decoupling she mustn't be decoupling we mustn't be decoupling you mustn't be decoupling they mustn't be decoupling
Perfect	V-ing perfect
I mustn't have decoupled you mustn't have decoupled she mustn't have decoupled we mustn't have decoupled you mustn't have decoupled they mustn't have decoupled	I mustn't have been decoupling you mustn't have been decoupling she mustn't have been decoupling we mustn't have been decoupling you mustn't have been decoupling they mustn't have been decoupling

Interrogative form

Simple form	V-ing form
must I decouple? must you decouple? must she decouple? must we decouple? must you decouple? must they decouple?	must I be decoupling? must you be decoupling? must she be decoupling? must we be decoupling? must you be decoupling? must they be decoupling?
Perfect	V-ing perfect
must I have decoupled? must you have decoupled? must she have decoupled? must we have decoupled? must you have decoupled? must they have decoupled?	must I have been decoupling? must you have been decoupling? must she have been decoupling? must we have been decoupling? must you have been decoupling? must they have been decoupling?

Interro-negative form

Simple form	V-ing form
mustn't I decouple? mustn't you decouple? mustn't she decouple? mustn't we decouple? mustn't you decouple? mustn't they decouple?	mustn't I be decoupling? mustn't you be decoupling? mustn't she be decoupling? mustn't we be decoupling? mustn't you be decoupling? mustn't they be decoupling?
Perfect	V-ing perfect
mustn't I have decoupled? mustn't you have decoupled? mustn't she have decoupled? mustn't we have decoupled? mustn't you have decoupled? mustn't they have decoupled?	mustn't I have been decoupling? mustn't you have been decoupling? mustn't she have been decoupling? mustn't we have been decoupling? mustn't you have been decoupling? mustn't they have been decoupling?