I must flare you must flare she must flare we must flare you must flare they must flare
V-ing form
I must be flaring you must be flaring she must be flaring we must be flaring you must be flaring they must be flaring
Perfect
I must have flared you must have flared she must have flared we must have flared you must have flared they must have flared
V-ing perfect
I must have been flaring you must have been flaring she must have been flaring we must have been flaring you must have been flaring they must have been flaring
Negation
Simple form
I must not flare you must not flare she must not flare we must not flare you must not flare they must not flare
V-ing form
I must not be flaring you must not be flaring she must not be flaring we must not be flaring you must not be flaring they must not be flaring
Perfect
I must not have flared you must not have flared she must not have flared we must not have flared you must not have flared they must not have flared
V-ing perfect
I must not have been flaring you must not have been flaring she must not have been flaring we must not have been flaring you must not have been flaring they must not have been flaring
Interrogative form
Simple form
must I flare? must you flare? must she flare? must we flare? must you flare? must they flare?
V-ing form
must I be flaring? must you be flaring? must she be flaring? must we be flaring? must you be flaring? must they be flaring?
Perfect
must I have flared? must you have flared? must she have flared? must we have flared? must you have flared? must they have flared?
V-ing perfect
must I have been flaring? must you have been flaring? must she have been flaring? must we have been flaring? must you have been flaring? must they have been flaring?
Interro-negative form
Simple form
must I not flare? must you not flare? must she not flare? must we not flare? must you not flare? must they not flare?
V-ing form
must I not be flaring? must you not be flaring? must she not be flaring? must we not be flaring? must you not be flaring? must they not be flaring?
Perfect
must I not have flared? must you not have flared? must she not have flared? must we not have flared? must you not have flared? must they not have flared?
V-ing perfect
must I not have been flaring? must you not have been flaring? must she not have been flaring? must we not have been flaring? must you not have been flaring? must they not have been flaring?