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