I must flatter you must flatter he must flatter we must flatter you must flatter they must flatter
V-ing form
I must be flattering you must be flattering he must be flattering we must be flattering you must be flattering they must be flattering
Perfect
I must have flattered you must have flattered he 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 he 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 he 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 he 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 he 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 he 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 he flatter? must we flatter? must you flatter? must they flatter?
V-ing form
must I be flattering? must you be flattering? must he be flattering? must we be flattering? must you be flattering? must they be flattering?
Perfect
must I have flattered? must you have flattered? must he 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 he 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 he 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 he 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 he 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 he not have been flattering? must we not have been flattering? must you not have been flattering? must they not have been flattering?