English verb conjugation
MUST SUP

Regular verb: sup - supped - supped

Affirmation

Simple form	V-ing form
I must sup you must sup he must sup we must sup you must sup they must sup	I must be supping you must be supping he must be supping we must be supping you must be supping they must be supping
Perfect	V-ing perfect
I must have supped you must have supped he must have supped we must have supped you must have supped they must have supped	I must have been supping you must have been supping he must have been supping we must have been supping you must have been supping they must have been supping

Negation

Simple form	V-ing form
I mustn't sup you mustn't sup he mustn't sup we mustn't sup you mustn't sup they mustn't sup	I mustn't be supping you mustn't be supping he mustn't be supping we mustn't be supping you mustn't be supping they mustn't be supping
Perfect	V-ing perfect
I mustn't have supped you mustn't have supped he mustn't have supped we mustn't have supped you mustn't have supped they mustn't have supped	I mustn't have been supping you mustn't have been supping he mustn't have been supping we mustn't have been supping you mustn't have been supping they mustn't have been supping

Interrogative form

Simple form	V-ing form
must I sup? must you sup? must he sup? must we sup? must you sup? must they sup?	must I be supping? must you be supping? must he be supping? must we be supping? must you be supping? must they be supping?
Perfect	V-ing perfect
must I have supped? must you have supped? must he have supped? must we have supped? must you have supped? must they have supped?	must I have been supping? must you have been supping? must he have been supping? must we have been supping? must you have been supping? must they have been supping?

Interro-negative form

Simple form	V-ing form
mustn't I sup? mustn't you sup? mustn't he sup? mustn't we sup? mustn't you sup? mustn't they sup?	mustn't I be supping? mustn't you be supping? mustn't he be supping? mustn't we be supping? mustn't you be supping? mustn't they be supping?
Perfect	V-ing perfect
mustn't I have supped? mustn't you have supped? mustn't he have supped? mustn't we have supped? mustn't you have supped? mustn't they have supped?	mustn't I have been supping? mustn't you have been supping? mustn't he have been supping? mustn't we have been supping? mustn't you have been supping? mustn't they have been supping?