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