English verb conjugation
MUST STURDY

Regular verb: sturdy - sturdied - sturdied

Affirmation

Simple form	V-ing form
I must sturdy you must sturdy he must sturdy we must sturdy you must sturdy they must sturdy	I must be sturdying you must be sturdying he must be sturdying we must be sturdying you must be sturdying they must be sturdying
Perfect	V-ing perfect
I must have sturdied you must have sturdied he must have sturdied we must have sturdied you must have sturdied they must have sturdied	I must have been sturdying you must have been sturdying he must have been sturdying we must have been sturdying you must have been sturdying they must have been sturdying

Negation

Simple form	V-ing form
I mustn't sturdy you mustn't sturdy he mustn't sturdy we mustn't sturdy you mustn't sturdy they mustn't sturdy	I mustn't be sturdying you mustn't be sturdying he mustn't be sturdying we mustn't be sturdying you mustn't be sturdying they mustn't be sturdying
Perfect	V-ing perfect
I mustn't have sturdied you mustn't have sturdied he mustn't have sturdied we mustn't have sturdied you mustn't have sturdied they mustn't have sturdied	I mustn't have been sturdying you mustn't have been sturdying he mustn't have been sturdying we mustn't have been sturdying you mustn't have been sturdying they mustn't have been sturdying

Interrogative form

Simple form	V-ing form
must I sturdy? must you sturdy? must he sturdy? must we sturdy? must you sturdy? must they sturdy?	must I be sturdying? must you be sturdying? must he be sturdying? must we be sturdying? must you be sturdying? must they be sturdying?
Perfect	V-ing perfect
must I have sturdied? must you have sturdied? must he have sturdied? must we have sturdied? must you have sturdied? must they have sturdied?	must I have been sturdying? must you have been sturdying? must he have been sturdying? must we have been sturdying? must you have been sturdying? must they have been sturdying?

Interro-negative form

Simple form	V-ing form
mustn't I sturdy? mustn't you sturdy? mustn't he sturdy? mustn't we sturdy? mustn't you sturdy? mustn't they sturdy?	mustn't I be sturdying? mustn't you be sturdying? mustn't he be sturdying? mustn't we be sturdying? mustn't you be sturdying? mustn't they be sturdying?
Perfect	V-ing perfect
mustn't I have sturdied? mustn't you have sturdied? mustn't he have sturdied? mustn't we have sturdied? mustn't you have sturdied? mustn't they have sturdied?	mustn't I have been sturdying? mustn't you have been sturdying? mustn't he have been sturdying? mustn't we have been sturdying? mustn't you have been sturdying? mustn't they have been sturdying?