I must omen you must omen she must omen we must omen you must omen they must omen
V-ing form
I must be omening you must be omening she must be omening we must be omening you must be omening they must be omening
Perfect
I must have omened you must have omened she 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 she must have been omening we must have been omening you must have been omening they must have been omening
Negation
Simple form
I must not omen you must not omen she must not omen we must not omen you must not omen they must not omen
V-ing form
I must not be omening you must not be omening she must not be omening we must not be omening you must not be omening they must not be omening
Perfect
I must not have omened you must not have omened she must not have omened we must not have omened you must not have omened they must not have omened
V-ing perfect
I must not have been omening you must not have been omening she must not have been omening we must not have been omening you must not have been omening they must not have been omening
Interrogative form
Simple form
must I omen? must you omen? must she omen? must we omen? must you omen? must they omen?
V-ing form
must I be omening? must you be omening? must she be omening? must we be omening? must you be omening? must they be omening?
Perfect
must I have omened? must you have omened? must she 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 she have been omening? must we have been omening? must you have been omening? must they have been omening?
Interro-negative form
Simple form
must I not omen? must you not omen? must she not omen? must we not omen? must you not omen? must they not omen?
V-ing form
must I not be omening? must you not be omening? must she not be omening? must we not be omening? must you not be omening? must they not be omening?
Perfect
must I not have omened? must you not have omened? must she not have omened? must we not have omened? must you not have omened? must they not have omened?
V-ing perfect
must I not have been omening? must you not have been omening? must she not have been omening? must we not have been omening? must you not have been omening? must they not have been omening?