must sputter
Verbo regolare: sputter - sputtered- sputtered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must sputter
you must sputter
he must sputter
we must sputter
you must sputter
they must sputter 	I must be sputtering
you must be sputtering
he must be sputtering
we must be sputtering
you must be sputtering
they must be sputtering	I must have sputtered
you must have sputtered
he must have sputtered
we must have sputtered
you must have sputtered
they must have sputtered	I must have been sputtering
you must have been sputtering
he must have been sputtering
we must have been sputtering
you must have been sputtering
they must have been sputtering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't sputter
you mustn't sputter
he mustn't sputter
we mustn't sputter
you mustn't sputter
they mustn't sputter 	I mustn't be sputtering
you mustn't be sputtering
he mustn't be sputtering
we mustn't be sputtering
you mustn't be sputtering
they mustn't be sputtering	I mustn't have sputtered
you mustn't have sputtered
he mustn't have sputtered
we mustn't have sputtered
you mustn't have sputtered
they mustn't have sputtered	I mustn't have been sputtering
you mustn't have been sputtering
he mustn't have been sputtering
we mustn't have been sputtering
you mustn't have been sputtering
they mustn't have been sputtering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I sputter?
must you sputter?
must he sputter?
must we sputter?
must you sputter?
must they sputter? 	must I be sputtering?
must you be sputtering?
must he be sputtering?
must we be sputtering?
must you be sputtering?
must they be sputtering? 	must I have sputtered?
must you have sputtered?
must he have sputtered?
must we have sputtered?
must you have sputtered?
must they have sputtered? 	must I have been sputtering?
must you have been sputtering?
must he have been sputtering?
must we have been sputtering?
must you have been sputtering?
must they have been sputtering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I sputter?
mustn't you sputter?
mustn't he sputter?
mustn't we sputter?
mustn't you sputter?
mustn't they sputter? 	mustn't I be sputtering?
mustn't you be sputtering?
mustn't he be sputtering?
mustn't we be sputtering?
mustn't you be sputtering?
mustn't they be sputtering? 	mustn't I have sputtered?
mustn't you have sputtered?
mustn't he have sputtered?
mustn't we have sputtered?
mustn't you have sputtered?
mustn't they have sputtered? 	mustn't I have been sputtering?
mustn't you have been sputtering?
mustn't he have been sputtering?
mustn't we have been sputtering?
mustn't you have been sputtering?
mustn't they have been sputtering?