I must annihilate you must annihilate he must annihilate we must annihilate you must annihilate they must annihilate
V-ing form
I must be annihilating you must be annihilating he must be annihilating we must be annihilating you must be annihilating they must be annihilating
Perfect
I must have annihilated you must have annihilated he 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 he 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 he 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 he 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 he 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 he 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 he annihilate? must we annihilate? must you annihilate? must they annihilate?
V-ing form
must I be annihilating? must you be annihilating? must he be annihilating? must we be annihilating? must you be annihilating? must they be annihilating?
Perfect
must I have annihilated? must you have annihilated? must he 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 he 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 he 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 he 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 he 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 he have been annihilating? mustn't we have been annihilating? mustn't you have been annihilating? mustn't they have been annihilating?