English verb conjugation
MUST UNCOUPLE

Regular verb: uncouple - uncoupled - uncoupled

Affirmation

Simple form	V-ing form
I must uncouple you must uncouple he must uncouple we must uncouple you must uncouple they must uncouple	I must be uncoupling you must be uncoupling he must be uncoupling we must be uncoupling you must be uncoupling they must be uncoupling
Perfect	V-ing perfect
I must have uncoupled you must have uncoupled he must have uncoupled we must have uncoupled you must have uncoupled they must have uncoupled	I must have been uncoupling you must have been uncoupling he must have been uncoupling we must have been uncoupling you must have been uncoupling they must have been uncoupling

Negation

Simple form	V-ing form
I mustn't uncouple you mustn't uncouple he mustn't uncouple we mustn't uncouple you mustn't uncouple they mustn't uncouple	I mustn't be uncoupling you mustn't be uncoupling he mustn't be uncoupling we mustn't be uncoupling you mustn't be uncoupling they mustn't be uncoupling
Perfect	V-ing perfect
I mustn't have uncoupled you mustn't have uncoupled he mustn't have uncoupled we mustn't have uncoupled you mustn't have uncoupled they mustn't have uncoupled	I mustn't have been uncoupling you mustn't have been uncoupling he mustn't have been uncoupling we mustn't have been uncoupling you mustn't have been uncoupling they mustn't have been uncoupling

Interrogative form

Simple form	V-ing form
must I uncouple? must you uncouple? must he uncouple? must we uncouple? must you uncouple? must they uncouple?	must I be uncoupling? must you be uncoupling? must he be uncoupling? must we be uncoupling? must you be uncoupling? must they be uncoupling?
Perfect	V-ing perfect
must I have uncoupled? must you have uncoupled? must he have uncoupled? must we have uncoupled? must you have uncoupled? must they have uncoupled?	must I have been uncoupling? must you have been uncoupling? must he have been uncoupling? must we have been uncoupling? must you have been uncoupling? must they have been uncoupling?

Interro-negative form

Simple form	V-ing form
mustn't I uncouple? mustn't you uncouple? mustn't he uncouple? mustn't we uncouple? mustn't you uncouple? mustn't they uncouple?	mustn't I be uncoupling? mustn't you be uncoupling? mustn't he be uncoupling? mustn't we be uncoupling? mustn't you be uncoupling? mustn't they be uncoupling?
Perfect	V-ing perfect
mustn't I have uncoupled? mustn't you have uncoupled? mustn't he have uncoupled? mustn't we have uncoupled? mustn't you have uncoupled? mustn't they have uncoupled?	mustn't I have been uncoupling? mustn't you have been uncoupling? mustn't he have been uncoupling? mustn't we have been uncoupling? mustn't you have been uncoupling? mustn't they have been uncoupling?