English verb conjugation
MUST STYMY

Regular verb: stymy - stymied - stymied

Affirmation

Simple form	V-ing form
I must stymy you must stymy he must stymy we must stymy you must stymy they must stymy	I must be stymying you must be stymying he must be stymying we must be stymying you must be stymying they must be stymying
Perfect	V-ing perfect
I must have stymied you must have stymied he must have stymied we must have stymied you must have stymied they must have stymied	I must have been stymying you must have been stymying he must have been stymying we must have been stymying you must have been stymying they must have been stymying

Negation

Simple form	V-ing form
I mustn't stymy you mustn't stymy he mustn't stymy we mustn't stymy you mustn't stymy they mustn't stymy	I mustn't be stymying you mustn't be stymying he mustn't be stymying we mustn't be stymying you mustn't be stymying they mustn't be stymying
Perfect	V-ing perfect
I mustn't have stymied you mustn't have stymied he mustn't have stymied we mustn't have stymied you mustn't have stymied they mustn't have stymied	I mustn't have been stymying you mustn't have been stymying he mustn't have been stymying we mustn't have been stymying you mustn't have been stymying they mustn't have been stymying

Interrogative form

Simple form	V-ing form
must I stymy? must you stymy? must he stymy? must we stymy? must you stymy? must they stymy?	must I be stymying? must you be stymying? must he be stymying? must we be stymying? must you be stymying? must they be stymying?
Perfect	V-ing perfect
must I have stymied? must you have stymied? must he have stymied? must we have stymied? must you have stymied? must they have stymied?	must I have been stymying? must you have been stymying? must he have been stymying? must we have been stymying? must you have been stymying? must they have been stymying?

Interro-negative form

Simple form	V-ing form
mustn't I stymy? mustn't you stymy? mustn't he stymy? mustn't we stymy? mustn't you stymy? mustn't they stymy?	mustn't I be stymying? mustn't you be stymying? mustn't he be stymying? mustn't we be stymying? mustn't you be stymying? mustn't they be stymying?
Perfect	V-ing perfect
mustn't I have stymied? mustn't you have stymied? mustn't he have stymied? mustn't we have stymied? mustn't you have stymied? mustn't they have stymied?	mustn't I have been stymying? mustn't you have been stymying? mustn't he have been stymying? mustn't we have been stymying? mustn't you have been stymying? mustn't they have been stymying?