I must annihilate you must annihilate she must annihilate we must annihilate you must annihilate they must annihilate
V-ing form
I must be annihilating you must be annihilating she must be annihilating we must be annihilating you must be annihilating they must be annihilating
Perfect
I must have annihilated you must have annihilated she must have annihilated we must have annihilated you must have annihilated they must have annihilated
V-ing perfect
I must have been annihilating you must have been annihilating she must have been annihilating we must have been annihilating you must have been annihilating they must have been annihilating
Negation
Simple form
I mustn't annihilate you mustn't annihilate she mustn't annihilate we mustn't annihilate you mustn't annihilate they mustn't annihilate
V-ing form
I mustn't be annihilating you mustn't be annihilating she mustn't be annihilating we mustn't be annihilating you mustn't be annihilating they mustn't be annihilating
Perfect
I mustn't have annihilated you mustn't have annihilated she mustn't have annihilated we mustn't have annihilated you mustn't have annihilated they mustn't have annihilated
V-ing perfect
I mustn't have been annihilating you mustn't have been annihilating she mustn't have been annihilating we mustn't have been annihilating you mustn't have been annihilating they mustn't have been annihilating
Interrogative form
Simple form
must I annihilate? must you annihilate? must she annihilate? must we annihilate? must you annihilate? must they annihilate?
V-ing form
must I be annihilating? must you be annihilating? must she be annihilating? must we be annihilating? must you be annihilating? must they be annihilating?
Perfect
must I have annihilated? must you have annihilated? must she have annihilated? must we have annihilated? must you have annihilated? must they have annihilated?
V-ing perfect
must I have been annihilating? must you have been annihilating? must she have been annihilating? must we have been annihilating? must you have been annihilating? must they have been annihilating?
Interro-negative form
Simple form
mustn't I annihilate? mustn't you annihilate? mustn't she annihilate? mustn't we annihilate? mustn't you annihilate? mustn't they annihilate?
V-ing form
mustn't I be annihilating? mustn't you be annihilating? mustn't she be annihilating? mustn't we be annihilating? mustn't you be annihilating? mustn't they be annihilating?
Perfect
mustn't I have annihilated? mustn't you have annihilated? mustn't she have annihilated? mustn't we have annihilated? mustn't you have annihilated? mustn't they have annihilated?
V-ing perfect
mustn't I have been annihilating? mustn't you have been annihilating? mustn't she have been annihilating? mustn't we have been annihilating? mustn't you have been annihilating? mustn't they have been annihilating?