English verb conjugation
MUST LEER

Regular verb: leer - leered - leered

Affirmation

Simple form	V-ing form
I must leer you must leer he must leer we must leer you must leer they must leer	I must be leering you must be leering he must be leering we must be leering you must be leering they must be leering
Perfect	V-ing perfect
I must have leered you must have leered he must have leered we must have leered you must have leered they must have leered	I must have been leering you must have been leering he must have been leering we must have been leering you must have been leering they must have been leering

Negation

Simple form	V-ing form
I mustn't leer you mustn't leer he mustn't leer we mustn't leer you mustn't leer they mustn't leer	I mustn't be leering you mustn't be leering he mustn't be leering we mustn't be leering you mustn't be leering they mustn't be leering
Perfect	V-ing perfect
I mustn't have leered you mustn't have leered he mustn't have leered we mustn't have leered you mustn't have leered they mustn't have leered	I mustn't have been leering you mustn't have been leering he mustn't have been leering we mustn't have been leering you mustn't have been leering they mustn't have been leering

Interrogative form

Simple form	V-ing form
must I leer? must you leer? must he leer? must we leer? must you leer? must they leer?	must I be leering? must you be leering? must he be leering? must we be leering? must you be leering? must they be leering?
Perfect	V-ing perfect
must I have leered? must you have leered? must he have leered? must we have leered? must you have leered? must they have leered?	must I have been leering? must you have been leering? must he have been leering? must we have been leering? must you have been leering? must they have been leering?

Interro-negative form

Simple form	V-ing form
mustn't I leer? mustn't you leer? mustn't he leer? mustn't we leer? mustn't you leer? mustn't they leer?	mustn't I be leering? mustn't you be leering? mustn't he be leering? mustn't we be leering? mustn't you be leering? mustn't they be leering?
Perfect	V-ing perfect
mustn't I have leered? mustn't you have leered? mustn't he have leered? mustn't we have leered? mustn't you have leered? mustn't they have leered?	mustn't I have been leering? mustn't you have been leering? mustn't he have been leering? mustn't we have been leering? mustn't you have been leering? mustn't they have been leering?