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