will blacken
Regular verb: blacken - blackened- blackened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will blacken
you will blacken
he will blacken
we will blacken
you will blacken
they will blacken 	I will be blackening
you will be blackening
he will be blackening
we will be blackening
you will be blackening
they will be blackening	I will have blackened
you will have blackened
he will have blackened
we will have blackened
you will have blackened
they will have blackened	I will have been blackening
you will have been blackening
he will have been blackening
we will have been blackening
you will have been blackening
they will have been blackening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will not blacken
you will not blacken
he will not blacken
we will not blacken
you will not blacken
they will not blacken 	I will not be blackening
you will not be blackening
he will not be blackening
we will not be blackening
you will not be blackening
they will not be blackening	I will not have blackened
you will not have blackened
he will not have blackened
we will not have blackened
you will not have blackened
they will not have blackened	I will not have been blackening
you will not have been blackening
he will not have been blackening
we will not have been blackening
you will not have been blackening
they will not have been blackening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I blacken?
will you blacken?
will he blacken?
will we blacken?
will you blacken?
will they blacken? 	will I be blackening?
will you be blackening?
will he be blackening?
will we be blackening?
will you be blackening?
will they be blackening? 	will I have blackened?
will you have blackened?
will he have blackened?
will we have blackened?
will you have blackened?
will they have blackened? 	will I have been blackening?
will you have been blackening?
will he have been blackening?
will we have been blackening?
will you have been blackening?
will they have been blackening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I not blacken?
will you not blacken?
will he not blacken?
will we not blacken?
will you not blacken?
will they not blacken? 	will I not be blackening?
will you not be blackening?
will he not be blackening?
will we not be blackening?
will you not be blackening?
will they not be blackening? 	will I not have blackened?
will you not have blackened?
will he not have blackened?
will we not have blackened?
will you not have blackened?
will they not have blackened? 	will I not have been blackening?
will you not have been blackening?
will he not have been blackening?
will we not have been blackening?
will you not have been blackening?
will they not have been blackening?