could grumble
Verbo regolare: grumble - grumbled- grumbled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could grumble
you could grumble
he could grumble
we could grumble
you could grumble
they could grumble 	I could be grumbling
you could be grumbling
he could be grumbling
we could be grumbling
you could be grumbling
they could be grumbling	I could have grumbled
you could have grumbled
he could have grumbled
we could have grumbled
you could have grumbled
they could have grumbled	I could have been grumbling
you could have been grumbling
he could have been grumbling
we could have been grumbling
you could have been grumbling
they could have been grumbling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't grumble
you couldn't grumble
he couldn't grumble
we couldn't grumble
you couldn't grumble
they couldn't grumble 	I couldn't be grumbling
you couldn't be grumbling
he couldn't be grumbling
we couldn't be grumbling
you couldn't be grumbling
they couldn't be grumbling	I couldn't have grumbled
you couldn't have grumbled
he couldn't have grumbled
we couldn't have grumbled
you couldn't have grumbled
they couldn't have grumbled	I couldn't have been grumbling
you couldn't have been grumbling
he couldn't have been grumbling
we couldn't have been grumbling
you couldn't have been grumbling
they couldn't have been grumbling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I grumble?
could you grumble?
could he grumble?
could we grumble?
could you grumble?
could they grumble? 	could I be grumbling?
could you be grumbling?
could he be grumbling?
could we be grumbling?
could you be grumbling?
could they be grumbling? 	could I have grumbled?
could you have grumbled?
could he have grumbled?
could we have grumbled?
could you have grumbled?
could they have grumbled? 	could I have been grumbling?
could you have been grumbling?
could he have been grumbling?
could we have been grumbling?
could you have been grumbling?
could they have been grumbling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I grumble?
couldn't you grumble?
couldn't he grumble?
couldn't we grumble?
couldn't you grumble?
couldn't they grumble? 	couldn't I be grumbling?
couldn't you be grumbling?
couldn't he be grumbling?
couldn't we be grumbling?
couldn't you be grumbling?
couldn't they be grumbling? 	couldn't I have grumbled?
couldn't you have grumbled?
couldn't he have grumbled?
couldn't we have grumbled?
couldn't you have grumbled?
couldn't they have grumbled? 	couldn't I have been grumbling?
couldn't you have been grumbling?
couldn't he have been grumbling?
couldn't we have been grumbling?
couldn't you have been grumbling?
couldn't they have been grumbling?