must encroach
Regular verb: encroach - encroached- encroached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must encroach
you must encroach
he must encroach
we must encroach
you must encroach
they must encroach 	I must be encroaching
you must be encroaching
he must be encroaching
we must be encroaching
you must be encroaching
they must be encroaching	I must have encroached
you must have encroached
he must have encroached
we must have encroached
you must have encroached
they must have encroached	I must have been encroaching
you must have been encroaching
he must have been encroaching
we must have been encroaching
you must have been encroaching
they must have been encroaching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't encroach
you mustn't encroach
he mustn't encroach
we mustn't encroach
you mustn't encroach
they mustn't encroach 	I mustn't be encroaching
you mustn't be encroaching
he mustn't be encroaching
we mustn't be encroaching
you mustn't be encroaching
they mustn't be encroaching	I mustn't have encroached
you mustn't have encroached
he mustn't have encroached
we mustn't have encroached
you mustn't have encroached
they mustn't have encroached	I mustn't have been encroaching
you mustn't have been encroaching
he mustn't have been encroaching
we mustn't have been encroaching
you mustn't have been encroaching
they mustn't have been encroaching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I encroach?
must you encroach?
must he encroach?
must we encroach?
must you encroach?
must they encroach? 	must I be encroaching?
must you be encroaching?
must he be encroaching?
must we be encroaching?
must you be encroaching?
must they be encroaching? 	must I have encroached?
must you have encroached?
must he have encroached?
must we have encroached?
must you have encroached?
must they have encroached? 	must I have been encroaching?
must you have been encroaching?
must he have been encroaching?
must we have been encroaching?
must you have been encroaching?
must they have been encroaching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I encroach?
mustn't you encroach?
mustn't he encroach?
mustn't we encroach?
mustn't you encroach?
mustn't they encroach? 	mustn't I be encroaching?
mustn't you be encroaching?
mustn't he be encroaching?
mustn't we be encroaching?
mustn't you be encroaching?
mustn't they be encroaching? 	mustn't I have encroached?
mustn't you have encroached?
mustn't he have encroached?
mustn't we have encroached?
mustn't you have encroached?
mustn't they have encroached? 	mustn't I have been encroaching?
mustn't you have been encroaching?
mustn't he have been encroaching?
mustn't we have been encroaching?
mustn't you have been encroaching?
mustn't they have been encroaching?