must fluster
Verbo regular: fluster - flustered- flustered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must fluster
you must fluster
she must fluster
we must fluster
you must fluster
they must fluster 	I must be flustering
you must be flustering
she must be flustering
we must be flustering
you must be flustering
they must be flustering	I must have flustered
you must have flustered
she must have flustered
we must have flustered
you must have flustered
they must have flustered	I must have been flustering
you must have been flustering
she must have been flustering
we must have been flustering
you must have been flustering
they must have been flustering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't fluster
you mustn't fluster
she mustn't fluster
we mustn't fluster
you mustn't fluster
they mustn't fluster 	I mustn't be flustering
you mustn't be flustering
she mustn't be flustering
we mustn't be flustering
you mustn't be flustering
they mustn't be flustering	I mustn't have flustered
you mustn't have flustered
she mustn't have flustered
we mustn't have flustered
you mustn't have flustered
they mustn't have flustered	I mustn't have been flustering
you mustn't have been flustering
she mustn't have been flustering
we mustn't have been flustering
you mustn't have been flustering
they mustn't have been flustering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I fluster?
must you fluster?
must she fluster?
must we fluster?
must you fluster?
must they fluster? 	must I be flustering?
must you be flustering?
must she be flustering?
must we be flustering?
must you be flustering?
must they be flustering? 	must I have flustered?
must you have flustered?
must she have flustered?
must we have flustered?
must you have flustered?
must they have flustered? 	must I have been flustering?
must you have been flustering?
must she have been flustering?
must we have been flustering?
must you have been flustering?
must they have been flustering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I fluster?
mustn't you fluster?
mustn't she fluster?
mustn't we fluster?
mustn't you fluster?
mustn't they fluster? 	mustn't I be flustering?
mustn't you be flustering?
mustn't she be flustering?
mustn't we be flustering?
mustn't you be flustering?
mustn't they be flustering? 	mustn't I have flustered?
mustn't you have flustered?
mustn't she have flustered?
mustn't we have flustered?
mustn't you have flustered?
mustn't they have flustered? 	mustn't I have been flustering?
mustn't you have been flustering?
mustn't she have been flustering?
mustn't we have been flustering?
mustn't you have been flustering?
mustn't they have been flustering?