English verb conjugation
MUST SHEER

Regular verb: sheer - sheered - sheered

Affirmation

Simple form	V-ing form
I must sheer you must sheer he must sheer we must sheer you must sheer they must sheer	I must be sheering you must be sheering he must be sheering we must be sheering you must be sheering they must be sheering
Perfect	V-ing perfect
I must have sheered you must have sheered he must have sheered we must have sheered you must have sheered they must have sheered	I must have been sheering you must have been sheering he must have been sheering we must have been sheering you must have been sheering they must have been sheering

Negation

Simple form	V-ing form
I must not sheer you must not sheer he must not sheer we must not sheer you must not sheer they must not sheer	I must not be sheering you must not be sheering he must not be sheering we must not be sheering you must not be sheering they must not be sheering
Perfect	V-ing perfect
I must not have sheered you must not have sheered he must not have sheered we must not have sheered you must not have sheered they must not have sheered	I must not have been sheering you must not have been sheering he must not have been sheering we must not have been sheering you must not have been sheering they must not have been sheering

Interrogative form

Simple form	V-ing form
must I sheer? must you sheer? must he sheer? must we sheer? must you sheer? must they sheer?	must I be sheering? must you be sheering? must he be sheering? must we be sheering? must you be sheering? must they be sheering?
Perfect	V-ing perfect
must I have sheered? must you have sheered? must he have sheered? must we have sheered? must you have sheered? must they have sheered?	must I have been sheering? must you have been sheering? must he have been sheering? must we have been sheering? must you have been sheering? must they have been sheering?

Interro-negative form

Simple form	V-ing form
must I not sheer? must you not sheer? must he not sheer? must we not sheer? must you not sheer? must they not sheer?	must I not be sheering? must you not be sheering? must he not be sheering? must we not be sheering? must you not be sheering? must they not be sheering?
Perfect	V-ing perfect
must I not have sheered? must you not have sheered? must he not have sheered? must we not have sheered? must you not have sheered? must they not have sheered?	must I not have been sheering? must you not have been sheering? must he not have been sheering? must we not have been sheering? must you not have been sheering? must they not have been sheering?