English verb conjugation
MUST STY

Regular verb: sty - stied - stied

Affirmation

Simple form	V-ing form
I must sty you must sty she must sty we must sty you must sty they must sty	I must be stying you must be stying she must be stying we must be stying you must be stying they must be stying
Perfect	V-ing perfect
I must have stied you must have stied she must have stied we must have stied you must have stied they must have stied	I must have been stying you must have been stying she must have been stying we must have been stying you must have been stying they must have been stying

Negation

Simple form	V-ing form
I must not sty you must not sty she must not sty we must not sty you must not sty they must not sty	I must not be stying you must not be stying she must not be stying we must not be stying you must not be stying they must not be stying
Perfect	V-ing perfect
I must not have stied you must not have stied she must not have stied we must not have stied you must not have stied they must not have stied	I must not have been stying you must not have been stying she must not have been stying we must not have been stying you must not have been stying they must not have been stying

Interrogative form

Simple form	V-ing form
must I sty? must you sty? must she sty? must we sty? must you sty? must they sty?	must I be stying? must you be stying? must she be stying? must we be stying? must you be stying? must they be stying?
Perfect	V-ing perfect
must I have stied? must you have stied? must she have stied? must we have stied? must you have stied? must they have stied?	must I have been stying? must you have been stying? must she have been stying? must we have been stying? must you have been stying? must they have been stying?

Interro-negative form

Simple form	V-ing form
must I not sty? must you not sty? must she not sty? must we not sty? must you not sty? must they not sty?	must I not be stying? must you not be stying? must she not be stying? must we not be stying? must you not be stying? must they not be stying?
Perfect	V-ing perfect
must I not have stied? must you not have stied? must she not have stied? must we not have stied? must you not have stied? must they not have stied?	must I not have been stying? must you not have been stying? must she not have been stying? must we not have been stying? must you not have been stying? must they not have been stying?