I must flare you must flare he must flare we must flare you must flare they must flare
V-ing form
I must be flaring you must be flaring he must be flaring we must be flaring you must be flaring they must be flaring
Perfect
I must have flared you must have flared he 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 he must have been flaring we must have been flaring you must have been flaring they must have been flaring
Negation
Simple form
I mustn't flare you mustn't flare he mustn't flare we mustn't flare you mustn't flare they mustn't flare
V-ing form
I mustn't be flaring you mustn't be flaring he mustn't be flaring we mustn't be flaring you mustn't be flaring they mustn't be flaring
Perfect
I mustn't have flared you mustn't have flared he mustn't have flared we mustn't have flared you mustn't have flared they mustn't have flared
V-ing perfect
I mustn't have been flaring you mustn't have been flaring he mustn't have been flaring we mustn't have been flaring you mustn't have been flaring they mustn't have been flaring
Interrogative form
Simple form
must I flare? must you flare? must he flare? must we flare? must you flare? must they flare?
V-ing form
must I be flaring? must you be flaring? must he be flaring? must we be flaring? must you be flaring? must they be flaring?
Perfect
must I have flared? must you have flared? must he 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 he have been flaring? must we have been flaring? must you have been flaring? must they have been flaring?
Interro-negative form
Simple form
mustn't I flare? mustn't you flare? mustn't he flare? mustn't we flare? mustn't you flare? mustn't they flare?
V-ing form
mustn't I be flaring? mustn't you be flaring? mustn't he be flaring? mustn't we be flaring? mustn't you be flaring? mustn't they be flaring?
Perfect
mustn't I have flared? mustn't you have flared? mustn't he have flared? mustn't we have flared? mustn't you have flared? mustn't they have flared?
V-ing perfect
mustn't I have been flaring? mustn't you have been flaring? mustn't he have been flaring? mustn't we have been flaring? mustn't you have been flaring? mustn't they have been flaring?