could puncture
Verbo regular: puncture - punctured- punctured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could puncture
you could puncture
she could puncture
we could puncture
you could puncture
they could puncture 	I could be puncturing
you could be puncturing
she could be puncturing
we could be puncturing
you could be puncturing
they could be puncturing	I could have punctured
you could have punctured
she could have punctured
we could have punctured
you could have punctured
they could have punctured	I could have been puncturing
you could have been puncturing
she could have been puncturing
we could have been puncturing
you could have been puncturing
they could have been puncturing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not puncture
you could not puncture
she could not puncture
we could not puncture
you could not puncture
they could not puncture 	I could not be puncturing
you could not be puncturing
she could not be puncturing
we could not be puncturing
you could not be puncturing
they could not be puncturing	I could not have punctured
you could not have punctured
she could not have punctured
we could not have punctured
you could not have punctured
they could not have punctured	I could not have been puncturing
you could not have been puncturing
she could not have been puncturing
we could not have been puncturing
you could not have been puncturing
they could not have been puncturing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I puncture?
could you puncture?
could she puncture?
could we puncture?
could you puncture?
could they puncture? 	could I be puncturing?
could you be puncturing?
could she be puncturing?
could we be puncturing?
could you be puncturing?
could they be puncturing? 	could I have punctured?
could you have punctured?
could she have punctured?
could we have punctured?
could you have punctured?
could they have punctured? 	could I have been puncturing?
could you have been puncturing?
could she have been puncturing?
could we have been puncturing?
could you have been puncturing?
could they have been puncturing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not puncture?
could you not puncture?
could she not puncture?
could we not puncture?
could you not puncture?
could they not puncture? 	could I not be puncturing?
could you not be puncturing?
could she not be puncturing?
could we not be puncturing?
could you not be puncturing?
could they not be puncturing? 	could I not have punctured?
could you not have punctured?
could she not have punctured?
could we not have punctured?
could you not have punctured?
could they not have punctured? 	could I not have been puncturing?
could you not have been puncturing?
could she not have been puncturing?
could we not have been puncturing?
could you not have been puncturing?
could they not have been puncturing?