English verb conjugation
MUST PLUG

Regular verb: plug - plugged - plugged

Affirmation

Simple form	V-ing form
I must plug you must plug he must plug we must plug you must plug they must plug	I must be plugging you must be plugging he must be plugging we must be plugging you must be plugging they must be plugging
Perfect	V-ing perfect
I must have plugged you must have plugged he must have plugged we must have plugged you must have plugged they must have plugged	I must have been plugging you must have been plugging he must have been plugging we must have been plugging you must have been plugging they must have been plugging

Negation

Simple form	V-ing form
I mustn't plug you mustn't plug he mustn't plug we mustn't plug you mustn't plug they mustn't plug	I mustn't be plugging you mustn't be plugging he mustn't be plugging we mustn't be plugging you mustn't be plugging they mustn't be plugging
Perfect	V-ing perfect
I mustn't have plugged you mustn't have plugged he mustn't have plugged we mustn't have plugged you mustn't have plugged they mustn't have plugged	I mustn't have been plugging you mustn't have been plugging he mustn't have been plugging we mustn't have been plugging you mustn't have been plugging they mustn't have been plugging

Interrogative form

Simple form	V-ing form
must I plug? must you plug? must he plug? must we plug? must you plug? must they plug?	must I be plugging? must you be plugging? must he be plugging? must we be plugging? must you be plugging? must they be plugging?
Perfect	V-ing perfect
must I have plugged? must you have plugged? must he have plugged? must we have plugged? must you have plugged? must they have plugged?	must I have been plugging? must you have been plugging? must he have been plugging? must we have been plugging? must you have been plugging? must they have been plugging?

Interro-negative form

Simple form	V-ing form
mustn't I plug? mustn't you plug? mustn't he plug? mustn't we plug? mustn't you plug? mustn't they plug?	mustn't I be plugging? mustn't you be plugging? mustn't he be plugging? mustn't we be plugging? mustn't you be plugging? mustn't they be plugging?
Perfect	V-ing perfect
mustn't I have plugged? mustn't you have plugged? mustn't he have plugged? mustn't we have plugged? mustn't you have plugged? mustn't they have plugged?	mustn't I have been plugging? mustn't you have been plugging? mustn't he have been plugging? mustn't we have been plugging? mustn't you have been plugging? mustn't they have been plugging?