could shingle
Verbo regolare: shingle - shingled- shingled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could shingle
you could shingle
he could shingle
we could shingle
you could shingle
they could shingle 	I could be shingling
you could be shingling
he could be shingling
we could be shingling
you could be shingling
they could be shingling	I could have shingled
you could have shingled
he could have shingled
we could have shingled
you could have shingled
they could have shingled	I could have been shingling
you could have been shingling
he could have been shingling
we could have been shingling
you could have been shingling
they could have been shingling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't shingle
you couldn't shingle
he couldn't shingle
we couldn't shingle
you couldn't shingle
they couldn't shingle 	I couldn't be shingling
you couldn't be shingling
he couldn't be shingling
we couldn't be shingling
you couldn't be shingling
they couldn't be shingling	I couldn't have shingled
you couldn't have shingled
he couldn't have shingled
we couldn't have shingled
you couldn't have shingled
they couldn't have shingled	I couldn't have been shingling
you couldn't have been shingling
he couldn't have been shingling
we couldn't have been shingling
you couldn't have been shingling
they couldn't have been shingling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I shingle?
could you shingle?
could he shingle?
could we shingle?
could you shingle?
could they shingle? 	could I be shingling?
could you be shingling?
could he be shingling?
could we be shingling?
could you be shingling?
could they be shingling? 	could I have shingled?
could you have shingled?
could he have shingled?
could we have shingled?
could you have shingled?
could they have shingled? 	could I have been shingling?
could you have been shingling?
could he have been shingling?
could we have been shingling?
could you have been shingling?
could they have been shingling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I shingle?
couldn't you shingle?
couldn't he shingle?
couldn't we shingle?
couldn't you shingle?
couldn't they shingle? 	couldn't I be shingling?
couldn't you be shingling?
couldn't he be shingling?
couldn't we be shingling?
couldn't you be shingling?
couldn't they be shingling? 	couldn't I have shingled?
couldn't you have shingled?
couldn't he have shingled?
couldn't we have shingled?
couldn't you have shingled?
couldn't they have shingled? 	couldn't I have been shingling?
couldn't you have been shingling?
couldn't he have been shingling?
couldn't we have been shingling?
couldn't you have been shingling?
couldn't they have been shingling?