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