could sputter
Verbo regolare: sputter - sputtered- sputtered

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

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

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

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