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 must not sturdy you must not sturdy he must not sturdy we must not sturdy you must not sturdy they must not sturdy	I must not be sturdying you must not be sturdying he must not be sturdying we must not be sturdying you must not be sturdying they must not be sturdying
Perfect	V-ing perfect
I must not have sturdied you must not have sturdied he must not have sturdied we must not have sturdied you must not have sturdied they must not have sturdied	I must not have been sturdying you must not have been sturdying he must not have been sturdying we must not have been sturdying you must not have been sturdying they must not 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
must I not sturdy? must you not sturdy? must he not sturdy? must we not sturdy? must you not sturdy? must they not sturdy?	must I not be sturdying? must you not be sturdying? must he not be sturdying? must we not be sturdying? must you not be sturdying? must they not be sturdying?
Perfect	V-ing perfect
must I not have sturdied? must you not have sturdied? must he not have sturdied? must we not have sturdied? must you not have sturdied? must they not have sturdied?	must I not have been sturdying? must you not have been sturdying? must he not have been sturdying? must we not have been sturdying? must you not have been sturdying? must they not have been sturdying?