English verb conjugation
MUST SCAN

Regular verb: scan - scanned - scanned

Affirmation

Simple form	V-ing form
I must scan you must scan she must scan we must scan you must scan they must scan	I must be scanning you must be scanning she must be scanning we must be scanning you must be scanning they must be scanning
Perfect	V-ing perfect
I must have scanned you must have scanned she must have scanned we must have scanned you must have scanned they must have scanned	I must have been scanning you must have been scanning she must have been scanning we must have been scanning you must have been scanning they must have been scanning

Negation

Simple form	V-ing form
I must not scan you must not scan she must not scan we must not scan you must not scan they must not scan	I must not be scanning you must not be scanning she must not be scanning we must not be scanning you must not be scanning they must not be scanning
Perfect	V-ing perfect
I must not have scanned you must not have scanned she must not have scanned we must not have scanned you must not have scanned they must not have scanned	I must not have been scanning you must not have been scanning she must not have been scanning we must not have been scanning you must not have been scanning they must not have been scanning

Interrogative form

Simple form	V-ing form
must I scan? must you scan? must she scan? must we scan? must you scan? must they scan?	must I be scanning? must you be scanning? must she be scanning? must we be scanning? must you be scanning? must they be scanning?
Perfect	V-ing perfect
must I have scanned? must you have scanned? must she have scanned? must we have scanned? must you have scanned? must they have scanned?	must I have been scanning? must you have been scanning? must she have been scanning? must we have been scanning? must you have been scanning? must they have been scanning?

Interro-negative form

Simple form	V-ing form
must I not scan? must you not scan? must she not scan? must we not scan? must you not scan? must they not scan?	must I not be scanning? must you not be scanning? must she not be scanning? must we not be scanning? must you not be scanning? must they not be scanning?
Perfect	V-ing perfect
must I not have scanned? must you not have scanned? must she not have scanned? must we not have scanned? must you not have scanned? must they not have scanned?	must I not have been scanning? must you not have been scanning? must she not have been scanning? must we not have been scanning? must you not have been scanning? must they not have been scanning?