could crackle
Verbo regolare: crackle - crackled- crackled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could crackle
you could crackle
he could crackle
we could crackle
you could crackle
they could crackle 	I could be crackling
you could be crackling
he could be crackling
we could be crackling
you could be crackling
they could be crackling	I could have crackled
you could have crackled
he could have crackled
we could have crackled
you could have crackled
they could have crackled	I could have been crackling
you could have been crackling
he could have been crackling
we could have been crackling
you could have been crackling
they could have been crackling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not crackle
you could not crackle
he could not crackle
we could not crackle
you could not crackle
they could not crackle 	I could not be crackling
you could not be crackling
he could not be crackling
we could not be crackling
you could not be crackling
they could not be crackling	I could not have crackled
you could not have crackled
he could not have crackled
we could not have crackled
you could not have crackled
they could not have crackled	I could not have been crackling
you could not have been crackling
he could not have been crackling
we could not have been crackling
you could not have been crackling
they could not have been crackling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I crackle?
could you crackle?
could he crackle?
could we crackle?
could you crackle?
could they crackle? 	could I be crackling?
could you be crackling?
could he be crackling?
could we be crackling?
could you be crackling?
could they be crackling? 	could I have crackled?
could you have crackled?
could he have crackled?
could we have crackled?
could you have crackled?
could they have crackled? 	could I have been crackling?
could you have been crackling?
could he have been crackling?
could we have been crackling?
could you have been crackling?
could they have been crackling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not crackle?
could you not crackle?
could he not crackle?
could we not crackle?
could you not crackle?
could they not crackle? 	could I not be crackling?
could you not be crackling?
could he not be crackling?
could we not be crackling?
could you not be crackling?
could they not be crackling? 	could I not have crackled?
could you not have crackled?
could he not have crackled?
could we not have crackled?
could you not have crackled?
could they not have crackled? 	could I not have been crackling?
could you not have been crackling?
could he not have been crackling?
could we not have been crackling?
could you not have been crackling?
could they not have been crackling?