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
she must sputter
we must sputter
you must sputter
they must sputter 	I must be sputtering
you must be sputtering
she must be sputtering
we must be sputtering
you must be sputtering
they must be sputtering	I must have sputtered
you must have sputtered
she 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
she 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 must not sputter
you must not sputter
she must not sputter
we must not sputter
you must not sputter
they must not sputter 	I must not be sputtering
you must not be sputtering
she must not be sputtering
we must not be sputtering
you must not be sputtering
they must not be sputtering	I must not have sputtered
you must not have sputtered
she must not have sputtered
we must not have sputtered
you must not have sputtered
they must not have sputtered	I must not have been sputtering
you must not have been sputtering
she must not have been sputtering
we must not have been sputtering
you must not have been sputtering
they must not have been sputtering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I sputter?
must you sputter?
must she sputter?
must we sputter?
must you sputter?
must they sputter? 	must I be sputtering?
must you be sputtering?
must she be sputtering?
must we be sputtering?
must you be sputtering?
must they be sputtering? 	must I have sputtered?
must you have sputtered?
must she 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 she 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 	
must I not sputter?
must you not sputter?
must she not sputter?
must we not sputter?
must you not sputter?
must they not sputter? 	must I not be sputtering?
must you not be sputtering?
must she not be sputtering?
must we not be sputtering?
must you not be sputtering?
must they not be sputtering? 	must I not have sputtered?
must you not have sputtered?
must she not have sputtered?
must we not have sputtered?
must you not have sputtered?
must they not have sputtered? 	must I not have been sputtering?
must you not have been sputtering?
must she not have been sputtering?
must we not have been sputtering?
must you not have been sputtering?
must they not have been sputtering?