could backfire
Verbo regolare: backfire - backfired- backfired

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could backfire
you could backfire
he could backfire
we could backfire
you could backfire
they could backfire 	I could be backfiring
you could be backfiring
he could be backfiring
we could be backfiring
you could be backfiring
they could be backfiring	I could have backfired
you could have backfired
he could have backfired
we could have backfired
you could have backfired
they could have backfired	I could have been backfiring
you could have been backfiring
he could have been backfiring
we could have been backfiring
you could have been backfiring
they could have been backfiring	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not backfire
you could not backfire
he could not backfire
we could not backfire
you could not backfire
they could not backfire 	I could not be backfiring
you could not be backfiring
he could not be backfiring
we could not be backfiring
you could not be backfiring
they could not be backfiring	I could not have backfired
you could not have backfired
he could not have backfired
we could not have backfired
you could not have backfired
they could not have backfired	I could not have been backfiring
you could not have been backfiring
he could not have been backfiring
we could not have been backfiring
you could not have been backfiring
they could not have been backfiring	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I backfire?
could you backfire?
could he backfire?
could we backfire?
could you backfire?
could they backfire? 	could I be backfiring?
could you be backfiring?
could he be backfiring?
could we be backfiring?
could you be backfiring?
could they be backfiring? 	could I have backfired?
could you have backfired?
could he have backfired?
could we have backfired?
could you have backfired?
could they have backfired? 	could I have been backfiring?
could you have been backfiring?
could he have been backfiring?
could we have been backfiring?
could you have been backfiring?
could they have been backfiring? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not backfire?
could you not backfire?
could he not backfire?
could we not backfire?
could you not backfire?
could they not backfire? 	could I not be backfiring?
could you not be backfiring?
could he not be backfiring?
could we not be backfiring?
could you not be backfiring?
could they not be backfiring? 	could I not have backfired?
could you not have backfired?
could he not have backfired?
could we not have backfired?
could you not have backfired?
could they not have backfired? 	could I not have been backfiring?
could you not have been backfiring?
could he not have been backfiring?
could we not have been backfiring?
could you not have been backfiring?
could they not have been backfiring?