I could rust you could rust he could rust we could rust you could rust they could rust
Forma con V-ing
I could be rusting you could be rusting he could be rusting we could be rusting you could be rusting they could be rusting
Perfecto
I could have rusted you could have rusted he could have rusted we could have rusted you could have rusted they could have rusted
Perfecto con V-ing
I could have been rusting you could have been rusting he could have been rusting we could have been rusting you could have been rusting they could have been rusting
Negación
Forma simple
I could not rust you could not rust he could not rust we could not rust you could not rust they could not rust
Forma con V-ing
I could not be rusting you could not be rusting he could not be rusting we could not be rusting you could not be rusting they could not be rusting
Perfecto
I could not have rusted you could not have rusted he could not have rusted we could not have rusted you could not have rusted they could not have rusted
Perfecto con V-ing
I could not have been rusting you could not have been rusting he could not have been rusting we could not have been rusting you could not have been rusting they could not have been rusting
Forma interrogativa
Forma simple
could I rust? could you rust? could he rust? could we rust? could you rust? could they rust?
Forma con V-ing
could I be rusting? could you be rusting? could he be rusting? could we be rusting? could you be rusting? could they be rusting?
Perfecto
could I have rusted? could you have rusted? could he have rusted? could we have rusted? could you have rusted? could they have rusted?
Perfecto con V-ing
could I have been rusting? could you have been rusting? could he have been rusting? could we have been rusting? could you have been rusting? could they have been rusting?
Forma interro-negativa
Forma simple
could I not rust? could you not rust? could he not rust? could we not rust? could you not rust? could they not rust?
Forma con V-ing
could I not be rusting? could you not be rusting? could he not be rusting? could we not be rusting? could you not be rusting? could they not be rusting?
Perfecto
could I not have rusted? could you not have rusted? could he not have rusted? could we not have rusted? could you not have rusted? could they not have rusted?
Perfecto con V-ing
could I not have been rusting? could you not have been rusting? could he not have been rusting? could we not have been rusting? could you not have been rusting? could they not have been rusting?