English verb conjugation
MUST SLUMBER

Regular verb: slumber - slumbered - slumbered

Affirmation

Simple form	V-ing form
I must slumber you must slumber he must slumber we must slumber you must slumber they must slumber	I must be slumbering you must be slumbering he must be slumbering we must be slumbering you must be slumbering they must be slumbering
Perfect	V-ing perfect
I must have slumbered you must have slumbered he must have slumbered we must have slumbered you must have slumbered they must have slumbered	I must have been slumbering you must have been slumbering he must have been slumbering we must have been slumbering you must have been slumbering they must have been slumbering

Negation

Simple form	V-ing form
I mustn't slumber you mustn't slumber he mustn't slumber we mustn't slumber you mustn't slumber they mustn't slumber	I mustn't be slumbering you mustn't be slumbering he mustn't be slumbering we mustn't be slumbering you mustn't be slumbering they mustn't be slumbering
Perfect	V-ing perfect
I mustn't have slumbered you mustn't have slumbered he mustn't have slumbered we mustn't have slumbered you mustn't have slumbered they mustn't have slumbered	I mustn't have been slumbering you mustn't have been slumbering he mustn't have been slumbering we mustn't have been slumbering you mustn't have been slumbering they mustn't have been slumbering

Interrogative form

Simple form	V-ing form
must I slumber? must you slumber? must he slumber? must we slumber? must you slumber? must they slumber?	must I be slumbering? must you be slumbering? must he be slumbering? must we be slumbering? must you be slumbering? must they be slumbering?
Perfect	V-ing perfect
must I have slumbered? must you have slumbered? must he have slumbered? must we have slumbered? must you have slumbered? must they have slumbered?	must I have been slumbering? must you have been slumbering? must he have been slumbering? must we have been slumbering? must you have been slumbering? must they have been slumbering?

Interro-negative form

Simple form	V-ing form
mustn't I slumber? mustn't you slumber? mustn't he slumber? mustn't we slumber? mustn't you slumber? mustn't they slumber?	mustn't I be slumbering? mustn't you be slumbering? mustn't he be slumbering? mustn't we be slumbering? mustn't you be slumbering? mustn't they be slumbering?
Perfect	V-ing perfect
mustn't I have slumbered? mustn't you have slumbered? mustn't he have slumbered? mustn't we have slumbered? mustn't you have slumbered? mustn't they have slumbered?	mustn't I have been slumbering? mustn't you have been slumbering? mustn't he have been slumbering? mustn't we have been slumbering? mustn't you have been slumbering? mustn't they have been slumbering?