English verb conjugation
MUST STURDY

Regular verb: sturdy - sturdied - sturdied

Affirmation

Simple form	V-ing form
I must sturdy you must sturdy she must sturdy we must sturdy you must sturdy they must sturdy	I must be sturdying you must be sturdying she 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 she 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 she 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 she 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 she 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 she 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 she 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 she sturdy? must we sturdy? must you sturdy? must they sturdy?	must I be sturdying? must you be sturdying? must she 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 she 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 she 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 she 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 she 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 she 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 she not have been sturdying? must we not have been sturdying? must you not have been sturdying? must they not have been sturdying?