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