must jitter
Regular verb: jitter - jittered- jittered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must jitter
you must jitter
she must jitter
we must jitter
you must jitter
they must jitter 	I must be jittering
you must be jittering
she must be jittering
we must be jittering
you must be jittering
they must be jittering	I must have jittered
you must have jittered
she must have jittered
we must have jittered
you must have jittered
they must have jittered	I must have been jittering
you must have been jittering
she must have been jittering
we must have been jittering
you must have been jittering
they must have been jittering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't jitter
you mustn't jitter
she mustn't jitter
we mustn't jitter
you mustn't jitter
they mustn't jitter 	I mustn't be jittering
you mustn't be jittering
she mustn't be jittering
we mustn't be jittering
you mustn't be jittering
they mustn't be jittering	I mustn't have jittered
you mustn't have jittered
she mustn't have jittered
we mustn't have jittered
you mustn't have jittered
they mustn't have jittered	I mustn't have been jittering
you mustn't have been jittering
she mustn't have been jittering
we mustn't have been jittering
you mustn't have been jittering
they mustn't have been jittering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I jitter?
must you jitter?
must she jitter?
must we jitter?
must you jitter?
must they jitter? 	must I be jittering?
must you be jittering?
must she be jittering?
must we be jittering?
must you be jittering?
must they be jittering? 	must I have jittered?
must you have jittered?
must she have jittered?
must we have jittered?
must you have jittered?
must they have jittered? 	must I have been jittering?
must you have been jittering?
must she have been jittering?
must we have been jittering?
must you have been jittering?
must they have been jittering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I jitter?
mustn't you jitter?
mustn't she jitter?
mustn't we jitter?
mustn't you jitter?
mustn't they jitter? 	mustn't I be jittering?
mustn't you be jittering?
mustn't she be jittering?
mustn't we be jittering?
mustn't you be jittering?
mustn't they be jittering? 	mustn't I have jittered?
mustn't you have jittered?
mustn't she have jittered?
mustn't we have jittered?
mustn't you have jittered?
mustn't they have jittered? 	mustn't I have been jittering?
mustn't you have been jittering?
mustn't she have been jittering?
mustn't we have been jittering?
mustn't you have been jittering?
mustn't they have been jittering?