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 mustn't sheer you mustn't sheer he mustn't sheer we mustn't sheer you mustn't sheer they mustn't sheer	I mustn't be sheering you mustn't be sheering he mustn't be sheering we mustn't be sheering you mustn't be sheering they mustn't be sheering
Perfect	V-ing perfect
I mustn't have sheered you mustn't have sheered he mustn't have sheered we mustn't have sheered you mustn't have sheered they mustn't have sheered	I mustn't have been sheering you mustn't have been sheering he mustn't have been sheering we mustn't have been sheering you mustn't have been sheering they mustn't 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
mustn't I sheer? mustn't you sheer? mustn't he sheer? mustn't we sheer? mustn't you sheer? mustn't they sheer?	mustn't I be sheering? mustn't you be sheering? mustn't he be sheering? mustn't we be sheering? mustn't you be sheering? mustn't they be sheering?
Perfect	V-ing perfect
mustn't I have sheered? mustn't you have sheered? mustn't he have sheered? mustn't we have sheered? mustn't you have sheered? mustn't they have sheered?	mustn't I have been sheering? mustn't you have been sheering? mustn't he have been sheering? mustn't we have been sheering? mustn't you have been sheering? mustn't they have been sheering?