English verb conjugation
MUST SLUMBER

Regular verb: slumber - slumbered - slumbered

Affirmation

Simple form	V-ing form
I must slumber you must slumber she must slumber we must slumber you must slumber they must slumber	I must be slumbering you must be slumbering she 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 she 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 she 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 must not slumber you must not slumber she must not slumber we must not slumber you must not slumber they must not slumber	I must not be slumbering you must not be slumbering she must not be slumbering we must not be slumbering you must not be slumbering they must not be slumbering
Perfect	V-ing perfect
I must not have slumbered you must not have slumbered she must not have slumbered we must not have slumbered you must not have slumbered they must not have slumbered	I must not have been slumbering you must not have been slumbering she must not have been slumbering we must not have been slumbering you must not have been slumbering they must not have been slumbering

Interrogative form

Simple form	V-ing form
must I slumber? must you slumber? must she slumber? must we slumber? must you slumber? must they slumber?	must I be slumbering? must you be slumbering? must she 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 she 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 she 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
must I not slumber? must you not slumber? must she not slumber? must we not slumber? must you not slumber? must they not slumber?	must I not be slumbering? must you not be slumbering? must she not be slumbering? must we not be slumbering? must you not be slumbering? must they not be slumbering?
Perfect	V-ing perfect
must I not have slumbered? must you not have slumbered? must she not have slumbered? must we not have slumbered? must you not have slumbered? must they not have slumbered?	must I not have been slumbering? must you not have been slumbering? must she not have been slumbering? must we not have been slumbering? must you not have been slumbering? must they not have been slumbering?