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