could excuse
Verbo regular: excuse - excused- excused

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could excuse
you could excuse
he could excuse
we could excuse
you could excuse
they could excuse 	I could be excusing
you could be excusing
he could be excusing
we could be excusing
you could be excusing
they could be excusing	I could have excused
you could have excused
he could have excused
we could have excused
you could have excused
they could have excused	I could have been excusing
you could have been excusing
he could have been excusing
we could have been excusing
you could have been excusing
they could have been excusing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not excuse
you could not excuse
he could not excuse
we could not excuse
you could not excuse
they could not excuse 	I could not be excusing
you could not be excusing
he could not be excusing
we could not be excusing
you could not be excusing
they could not be excusing	I could not have excused
you could not have excused
he could not have excused
we could not have excused
you could not have excused
they could not have excused	I could not have been excusing
you could not have been excusing
he could not have been excusing
we could not have been excusing
you could not have been excusing
they could not have been excusing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I excuse?
could you excuse?
could he excuse?
could we excuse?
could you excuse?
could they excuse? 	could I be excusing?
could you be excusing?
could he be excusing?
could we be excusing?
could you be excusing?
could they be excusing? 	could I have excused?
could you have excused?
could he have excused?
could we have excused?
could you have excused?
could they have excused? 	could I have been excusing?
could you have been excusing?
could he have been excusing?
could we have been excusing?
could you have been excusing?
could they have been excusing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not excuse?
could you not excuse?
could he not excuse?
could we not excuse?
could you not excuse?
could they not excuse? 	could I not be excusing?
could you not be excusing?
could he not be excusing?
could we not be excusing?
could you not be excusing?
could they not be excusing? 	could I not have excused?
could you not have excused?
could he not have excused?
could we not have excused?
could you not have excused?
could they not have excused? 	could I not have been excusing?
could you not have been excusing?
could he not have been excusing?
could we not have been excusing?
could you not have been excusing?
could they not have been excusing?