can harken
Verbo regular: harken - harkened- harkened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can harken
you can harken
he can harken
we can harken
you can harken
they can harken 	I can be harkening
you can be harkening
he can be harkening
we can be harkening
you can be harkening
they can be harkening	I can have harkened
you can have harkened
he can have harkened
we can have harkened
you can have harkened
they can have harkened	I can have been harkening
you can have been harkening
he can have been harkening
we can have been harkening
you can have been harkening
they can have been harkening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot harken
you cannot harken
he cannot harken
we cannot harken
you cannot harken
they cannot harken 	I cannot be harkening
you cannot be harkening
he cannot be harkening
we cannot be harkening
you cannot be harkening
they cannot be harkening	I cannot have harkened
you cannot have harkened
he cannot have harkened
we cannot have harkened
you cannot have harkened
they cannot have harkened	I cannot have been harkening
you cannot have been harkening
he cannot have been harkening
we cannot have been harkening
you cannot have been harkening
they cannot have been harkening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I harken?
can you harken?
can he harken?
can we harken?
can you harken?
can they harken? 	can I be harkening?
can you be harkening?
can he be harkening?
can we be harkening?
can you be harkening?
can they be harkening? 	can I have harkened?
can you have harkened?
can he have harkened?
can we have harkened?
can you have harkened?
can they have harkened? 	can I have been harkening?
can you have been harkening?
can he have been harkening?
can we have been harkening?
can you have been harkening?
can they have been harkening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not harken?
can you not harken?
can he not harken?
can we not harken?
can you not harken?
can they not harken? 	can I not be harkening?
can you not be harkening?
can he not be harkening?
can we not be harkening?
can you not be harkening?
can they not be harkening? 	can I not have harkened?
can you not have harkened?
can he not have harkened?
can we not have harkened?
can you not have harkened?
can they not have harkened? 	can I not have been harkening?
can you not have been harkening?
can he not have been harkening?
can we not have been harkening?
can you not have been harkening?
can they not have been harkening?