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