must flitter
Regular verb: flitter - flittered- flittered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must flitter
you must flitter
he must flitter
we must flitter
you must flitter
they must flitter 	I must be flittering
you must be flittering
he must be flittering
we must be flittering
you must be flittering
they must be flittering	I must have flittered
you must have flittered
he must have flittered
we must have flittered
you must have flittered
they must have flittered	I must have been flittering
you must have been flittering
he must have been flittering
we must have been flittering
you must have been flittering
they must have been flittering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't flitter
you mustn't flitter
he mustn't flitter
we mustn't flitter
you mustn't flitter
they mustn't flitter 	I mustn't be flittering
you mustn't be flittering
he mustn't be flittering
we mustn't be flittering
you mustn't be flittering
they mustn't be flittering	I mustn't have flittered
you mustn't have flittered
he mustn't have flittered
we mustn't have flittered
you mustn't have flittered
they mustn't have flittered	I mustn't have been flittering
you mustn't have been flittering
he mustn't have been flittering
we mustn't have been flittering
you mustn't have been flittering
they mustn't have been flittering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I flitter?
must you flitter?
must he flitter?
must we flitter?
must you flitter?
must they flitter? 	must I be flittering?
must you be flittering?
must he be flittering?
must we be flittering?
must you be flittering?
must they be flittering? 	must I have flittered?
must you have flittered?
must he have flittered?
must we have flittered?
must you have flittered?
must they have flittered? 	must I have been flittering?
must you have been flittering?
must he have been flittering?
must we have been flittering?
must you have been flittering?
must they have been flittering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I flitter?
mustn't you flitter?
mustn't he flitter?
mustn't we flitter?
mustn't you flitter?
mustn't they flitter? 	mustn't I be flittering?
mustn't you be flittering?
mustn't he be flittering?
mustn't we be flittering?
mustn't you be flittering?
mustn't they be flittering? 	mustn't I have flittered?
mustn't you have flittered?
mustn't he have flittered?
mustn't we have flittered?
mustn't you have flittered?
mustn't they have flittered? 	mustn't I have been flittering?
mustn't you have been flittering?
mustn't he have been flittering?
mustn't we have been flittering?
mustn't you have been flittering?
mustn't they have been flittering?