must intercept
Regular verb: intercept - intercepted- intercepted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must intercept
you must intercept
he must intercept
we must intercept
you must intercept
they must intercept 	I must be intercepting
you must be intercepting
he must be intercepting
we must be intercepting
you must be intercepting
they must be intercepting	I must have intercepted
you must have intercepted
he must have intercepted
we must have intercepted
you must have intercepted
they must have intercepted	I must have been intercepting
you must have been intercepting
he must have been intercepting
we must have been intercepting
you must have been intercepting
they must have been intercepting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't intercept
you mustn't intercept
he mustn't intercept
we mustn't intercept
you mustn't intercept
they mustn't intercept 	I mustn't be intercepting
you mustn't be intercepting
he mustn't be intercepting
we mustn't be intercepting
you mustn't be intercepting
they mustn't be intercepting	I mustn't have intercepted
you mustn't have intercepted
he mustn't have intercepted
we mustn't have intercepted
you mustn't have intercepted
they mustn't have intercepted	I mustn't have been intercepting
you mustn't have been intercepting
he mustn't have been intercepting
we mustn't have been intercepting
you mustn't have been intercepting
they mustn't have been intercepting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I intercept?
must you intercept?
must he intercept?
must we intercept?
must you intercept?
must they intercept? 	must I be intercepting?
must you be intercepting?
must he be intercepting?
must we be intercepting?
must you be intercepting?
must they be intercepting? 	must I have intercepted?
must you have intercepted?
must he have intercepted?
must we have intercepted?
must you have intercepted?
must they have intercepted? 	must I have been intercepting?
must you have been intercepting?
must he have been intercepting?
must we have been intercepting?
must you have been intercepting?
must they have been intercepting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I intercept?
mustn't you intercept?
mustn't he intercept?
mustn't we intercept?
mustn't you intercept?
mustn't they intercept? 	mustn't I be intercepting?
mustn't you be intercepting?
mustn't he be intercepting?
mustn't we be intercepting?
mustn't you be intercepting?
mustn't they be intercepting? 	mustn't I have intercepted?
mustn't you have intercepted?
mustn't he have intercepted?
mustn't we have intercepted?
mustn't you have intercepted?
mustn't they have intercepted? 	mustn't I have been intercepting?
mustn't you have been intercepting?
mustn't he have been intercepting?
mustn't we have been intercepting?
mustn't you have been intercepting?
mustn't they have been intercepting?