can blacken
Verbo regolare: blacken - blackened- blackened

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can blacken
you can blacken
he can blacken
we can blacken
you can blacken
they can blacken 	I can be blackening
you can be blackening
he can be blackening
we can be blackening
you can be blackening
they can be blackening	I can have blackened
you can have blackened
he can have blackened
we can have blackened
you can have blackened
they can have blackened	I can have been blackening
you can have been blackening
he can have been blackening
we can have been blackening
you can have been blackening
they can have been blackening	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I cannot blacken
you cannot blacken
he cannot blacken
we cannot blacken
you cannot blacken
they cannot blacken 	I cannot be blackening
you cannot be blackening
he cannot be blackening
we cannot be blackening
you cannot be blackening
they cannot be blackening	I cannot have blackened
you cannot have blackened
he cannot have blackened
we cannot have blackened
you cannot have blackened
they cannot have blackened	I cannot have been blackening
you cannot have been blackening
he cannot have been blackening
we cannot have been blackening
you cannot have been blackening
they cannot have been blackening	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I blacken?
can you blacken?
can he blacken?
can we blacken?
can you blacken?
can they blacken? 	can I be blackening?
can you be blackening?
can he be blackening?
can we be blackening?
can you be blackening?
can they be blackening? 	can I have blackened?
can you have blackened?
can he have blackened?
can we have blackened?
can you have blackened?
can they have blackened? 	can I have been blackening?
can you have been blackening?
can he have been blackening?
can we have been blackening?
can you have been blackening?
can they have been blackening? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I not blacken?
can you not blacken?
can he not blacken?
can we not blacken?
can you not blacken?
can they not blacken? 	can I not be blackening?
can you not be blackening?
can he not be blackening?
can we not be blackening?
can you not be blackening?
can they not be blackening? 	can I not have blackened?
can you not have blackened?
can he not have blackened?
can we not have blackened?
can you not have blackened?
can they not have blackened? 	can I not have been blackening?
can you not have been blackening?
can he not have been blackening?
can we not have been blackening?
can you not have been blackening?
can they not have been blackening?