must forswear
Irregular verb: forswear - forswore- forsworn

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must forswear
you must forswear
he must forswear
we must forswear
you must forswear
they must forswear 	I must be forswearing
you must be forswearing
he must be forswearing
we must be forswearing
you must be forswearing
they must be forswearing	I must have forsworn
you must have forsworn
he must have forsworn
we must have forsworn
you must have forsworn
they must have forsworn	I must have been forswearing
you must have been forswearing
he must have been forswearing
we must have been forswearing
you must have been forswearing
they must have been forswearing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't forswear
you mustn't forswear
he mustn't forswear
we mustn't forswear
you mustn't forswear
they mustn't forswear 	I mustn't be forswearing
you mustn't be forswearing
he mustn't be forswearing
we mustn't be forswearing
you mustn't be forswearing
they mustn't be forswearing	I mustn't have forsworn
you mustn't have forsworn
he mustn't have forsworn
we mustn't have forsworn
you mustn't have forsworn
they mustn't have forsworn	I mustn't have been forswearing
you mustn't have been forswearing
he mustn't have been forswearing
we mustn't have been forswearing
you mustn't have been forswearing
they mustn't have been forswearing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I forswear?
must you forswear?
must he forswear?
must we forswear?
must you forswear?
must they forswear? 	must I be forswearing?
must you be forswearing?
must he be forswearing?
must we be forswearing?
must you be forswearing?
must they be forswearing? 	must I have forsworn?
must you have forsworn?
must he have forsworn?
must we have forsworn?
must you have forsworn?
must they have forsworn? 	must I have been forswearing?
must you have been forswearing?
must he have been forswearing?
must we have been forswearing?
must you have been forswearing?
must they have been forswearing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I forswear?
mustn't you forswear?
mustn't he forswear?
mustn't we forswear?
mustn't you forswear?
mustn't they forswear? 	mustn't I be forswearing?
mustn't you be forswearing?
mustn't he be forswearing?
mustn't we be forswearing?
mustn't you be forswearing?
mustn't they be forswearing? 	mustn't I have forsworn?
mustn't you have forsworn?
mustn't he have forsworn?
mustn't we have forsworn?
mustn't you have forsworn?
mustn't they have forsworn? 	mustn't I have been forswearing?
mustn't you have been forswearing?
mustn't he have been forswearing?
mustn't we have been forswearing?
mustn't you have been forswearing?
mustn't they have been forswearing?