I must flatter you must flatter she must flatter we must flatter you must flatter they must flatter
V-ing form
I must be flattering you must be flattering she must be flattering we must be flattering you must be flattering they must be flattering
Perfect
I must have flattered you must have flattered she must have flattered we must have flattered you must have flattered they must have flattered
V-ing perfect
I must have been flattering you must have been flattering she must have been flattering we must have been flattering you must have been flattering they must have been flattering
Negation
Simple form
I must not flatter you must not flatter she must not flatter we must not flatter you must not flatter they must not flatter
V-ing form
I must not be flattering you must not be flattering she must not be flattering we must not be flattering you must not be flattering they must not be flattering
Perfect
I must not have flattered you must not have flattered she must not have flattered we must not have flattered you must not have flattered they must not have flattered
V-ing perfect
I must not have been flattering you must not have been flattering she must not have been flattering we must not have been flattering you must not have been flattering they must not have been flattering
Interrogative form
Simple form
must I flatter? must you flatter? must she flatter? must we flatter? must you flatter? must they flatter?
V-ing form
must I be flattering? must you be flattering? must she be flattering? must we be flattering? must you be flattering? must they be flattering?
Perfect
must I have flattered? must you have flattered? must she have flattered? must we have flattered? must you have flattered? must they have flattered?
V-ing perfect
must I have been flattering? must you have been flattering? must she have been flattering? must we have been flattering? must you have been flattering? must they have been flattering?
Interro-negative form
Simple form
must I not flatter? must you not flatter? must she not flatter? must we not flatter? must you not flatter? must they not flatter?
V-ing form
must I not be flattering? must you not be flattering? must she not be flattering? must we not be flattering? must you not be flattering? must they not be flattering?
Perfect
must I not have flattered? must you not have flattered? must she not have flattered? must we not have flattered? must you not have flattered? must they not have flattered?
V-ing perfect
must I not have been flattering? must you not have been flattering? must she not have been flattering? must we not have been flattering? must you not have been flattering? must they not have been flattering?