can counterfeit
Verbo regular: counterfeit - counterfeited- counterfeited

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can counterfeit
you can counterfeit
he can counterfeit
we can counterfeit
you can counterfeit
they can counterfeit 	I can be counterfeiting
you can be counterfeiting
he can be counterfeiting
we can be counterfeiting
you can be counterfeiting
they can be counterfeiting	I can have counterfeited
you can have counterfeited
he can have counterfeited
we can have counterfeited
you can have counterfeited
they can have counterfeited	I can have been counterfeiting
you can have been counterfeiting
he can have been counterfeiting
we can have been counterfeiting
you can have been counterfeiting
they can have been counterfeiting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot counterfeit
you cannot counterfeit
he cannot counterfeit
we cannot counterfeit
you cannot counterfeit
they cannot counterfeit 	I cannot be counterfeiting
you cannot be counterfeiting
he cannot be counterfeiting
we cannot be counterfeiting
you cannot be counterfeiting
they cannot be counterfeiting	I cannot have counterfeited
you cannot have counterfeited
he cannot have counterfeited
we cannot have counterfeited
you cannot have counterfeited
they cannot have counterfeited	I cannot have been counterfeiting
you cannot have been counterfeiting
he cannot have been counterfeiting
we cannot have been counterfeiting
you cannot have been counterfeiting
they cannot have been counterfeiting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I counterfeit?
can you counterfeit?
can he counterfeit?
can we counterfeit?
can you counterfeit?
can they counterfeit? 	can I be counterfeiting?
can you be counterfeiting?
can he be counterfeiting?
can we be counterfeiting?
can you be counterfeiting?
can they be counterfeiting? 	can I have counterfeited?
can you have counterfeited?
can he have counterfeited?
can we have counterfeited?
can you have counterfeited?
can they have counterfeited? 	can I have been counterfeiting?
can you have been counterfeiting?
can he have been counterfeiting?
can we have been counterfeiting?
can you have been counterfeiting?
can they have been counterfeiting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not counterfeit?
can you not counterfeit?
can he not counterfeit?
can we not counterfeit?
can you not counterfeit?
can they not counterfeit? 	can I not be counterfeiting?
can you not be counterfeiting?
can he not be counterfeiting?
can we not be counterfeiting?
can you not be counterfeiting?
can they not be counterfeiting? 	can I not have counterfeited?
can you not have counterfeited?
can he not have counterfeited?
can we not have counterfeited?
can you not have counterfeited?
can they not have counterfeited? 	can I not have been counterfeiting?
can you not have been counterfeiting?
can he not have been counterfeiting?
can we not have been counterfeiting?
can you not have been counterfeiting?
can they not have been counterfeiting?