must extract
Regular verb: extract - extracted- extracted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must extract
you must extract
he must extract
we must extract
you must extract
they must extract 	I must be extracting
you must be extracting
he must be extracting
we must be extracting
you must be extracting
they must be extracting	I must have extracted
you must have extracted
he must have extracted
we must have extracted
you must have extracted
they must have extracted	I must have been extracting
you must have been extracting
he must have been extracting
we must have been extracting
you must have been extracting
they must have been extracting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't extract
you mustn't extract
he mustn't extract
we mustn't extract
you mustn't extract
they mustn't extract 	I mustn't be extracting
you mustn't be extracting
he mustn't be extracting
we mustn't be extracting
you mustn't be extracting
they mustn't be extracting	I mustn't have extracted
you mustn't have extracted
he mustn't have extracted
we mustn't have extracted
you mustn't have extracted
they mustn't have extracted	I mustn't have been extracting
you mustn't have been extracting
he mustn't have been extracting
we mustn't have been extracting
you mustn't have been extracting
they mustn't have been extracting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I extract?
must you extract?
must he extract?
must we extract?
must you extract?
must they extract? 	must I be extracting?
must you be extracting?
must he be extracting?
must we be extracting?
must you be extracting?
must they be extracting? 	must I have extracted?
must you have extracted?
must he have extracted?
must we have extracted?
must you have extracted?
must they have extracted? 	must I have been extracting?
must you have been extracting?
must he have been extracting?
must we have been extracting?
must you have been extracting?
must they have been extracting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I extract?
mustn't you extract?
mustn't he extract?
mustn't we extract?
mustn't you extract?
mustn't they extract? 	mustn't I be extracting?
mustn't you be extracting?
mustn't he be extracting?
mustn't we be extracting?
mustn't you be extracting?
mustn't they be extracting? 	mustn't I have extracted?
mustn't you have extracted?
mustn't he have extracted?
mustn't we have extracted?
mustn't you have extracted?
mustn't they have extracted? 	mustn't I have been extracting?
mustn't you have been extracting?
mustn't he have been extracting?
mustn't we have been extracting?
mustn't you have been extracting?
mustn't they have been extracting?