must circumscribe
Regular verb: circumscribe - circumscribed- circumscribed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must circumscribe
you must circumscribe
she must circumscribe
we must circumscribe
you must circumscribe
they must circumscribe 	I must be circumscribing
you must be circumscribing
she must be circumscribing
we must be circumscribing
you must be circumscribing
they must be circumscribing	I must have circumscribed
you must have circumscribed
she must have circumscribed
we must have circumscribed
you must have circumscribed
they must have circumscribed	I must have been circumscribing
you must have been circumscribing
she must have been circumscribing
we must have been circumscribing
you must have been circumscribing
they must have been circumscribing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't circumscribe
you mustn't circumscribe
she mustn't circumscribe
we mustn't circumscribe
you mustn't circumscribe
they mustn't circumscribe 	I mustn't be circumscribing
you mustn't be circumscribing
she mustn't be circumscribing
we mustn't be circumscribing
you mustn't be circumscribing
they mustn't be circumscribing	I mustn't have circumscribed
you mustn't have circumscribed
she mustn't have circumscribed
we mustn't have circumscribed
you mustn't have circumscribed
they mustn't have circumscribed	I mustn't have been circumscribing
you mustn't have been circumscribing
she mustn't have been circumscribing
we mustn't have been circumscribing
you mustn't have been circumscribing
they mustn't have been circumscribing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I circumscribe?
must you circumscribe?
must she circumscribe?
must we circumscribe?
must you circumscribe?
must they circumscribe? 	must I be circumscribing?
must you be circumscribing?
must she be circumscribing?
must we be circumscribing?
must you be circumscribing?
must they be circumscribing? 	must I have circumscribed?
must you have circumscribed?
must she have circumscribed?
must we have circumscribed?
must you have circumscribed?
must they have circumscribed? 	must I have been circumscribing?
must you have been circumscribing?
must she have been circumscribing?
must we have been circumscribing?
must you have been circumscribing?
must they have been circumscribing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I circumscribe?
mustn't you circumscribe?
mustn't she circumscribe?
mustn't we circumscribe?
mustn't you circumscribe?
mustn't they circumscribe? 	mustn't I be circumscribing?
mustn't you be circumscribing?
mustn't she be circumscribing?
mustn't we be circumscribing?
mustn't you be circumscribing?
mustn't they be circumscribing? 	mustn't I have circumscribed?
mustn't you have circumscribed?
mustn't she have circumscribed?
mustn't we have circumscribed?
mustn't you have circumscribed?
mustn't they have circumscribed? 	mustn't I have been circumscribing?
mustn't you have been circumscribing?
mustn't she have been circumscribing?
mustn't we have been circumscribing?
mustn't you have been circumscribing?
mustn't they have been circumscribing?