I could backfire you could backfire she could backfire we could backfire you could backfire they could backfire
Forma con V-ing
I could be backfiring you could be backfiring she could be backfiring we could be backfiring you could be backfiring they could be backfiring
Perfecto
I could have backfired you could have backfired she could have backfired we could have backfired you could have backfired they could have backfired
Perfecto con V-ing
I could have been backfiring you could have been backfiring she could have been backfiring we could have been backfiring you could have been backfiring they could have been backfiring
Negación
Forma simple
I could not backfire you could not backfire she could not backfire we could not backfire you could not backfire they could not backfire
Forma con V-ing
I could not be backfiring you could not be backfiring she could not be backfiring we could not be backfiring you could not be backfiring they could not be backfiring
Perfecto
I could not have backfired you could not have backfired she could not have backfired we could not have backfired you could not have backfired they could not have backfired
Perfecto con V-ing
I could not have been backfiring you could not have been backfiring she 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 simple
could I backfire? could you backfire? could she backfire? could we backfire? could you backfire? could they backfire?
Forma con V-ing
could I be backfiring? could you be backfiring? could she be backfiring? could we be backfiring? could you be backfiring? could they be backfiring?
Perfecto
could I have backfired? could you have backfired? could she have backfired? could we have backfired? could you have backfired? could they have backfired?
Perfecto con V-ing
could I have been backfiring? could you have been backfiring? could she have been backfiring? could we have been backfiring? could you have been backfiring? could they have been backfiring?
Forma interro-negativa
Forma simple
could I not backfire? could you not backfire? could she not backfire? could we not backfire? could you not backfire? could they not backfire?
Forma con V-ing
could I not be backfiring? could you not be backfiring? could she not be backfiring? could we not be backfiring? could you not be backfiring? could they not be backfiring?
Perfecto
could I not have backfired? could you not have backfired? could she not have backfired? could we not have backfired? could you not have backfired? could they not have backfired?
Perfecto con V-ing
could I not have been backfiring? could you not have been backfiring? could she not have been backfiring? could we not have been backfiring? could you not have been backfiring? could they not have been backfiring?