will darken
Regular verb: darken - darkened- darkened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will darken
you will darken
he will darken
we will darken
you will darken
they will darken 	I will be darkening
you will be darkening
he will be darkening
we will be darkening
you will be darkening
they will be darkening	I will have darkened
you will have darkened
he will have darkened
we will have darkened
you will have darkened
they will have darkened	I will have been darkening
you will have been darkening
he will have been darkening
we will have been darkening
you will have been darkening
they will have been darkening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will not darken
you will not darken
he will not darken
we will not darken
you will not darken
they will not darken 	I will not be darkening
you will not be darkening
he will not be darkening
we will not be darkening
you will not be darkening
they will not be darkening	I will not have darkened
you will not have darkened
he will not have darkened
we will not have darkened
you will not have darkened
they will not have darkened	I will not have been darkening
you will not have been darkening
he will not have been darkening
we will not have been darkening
you will not have been darkening
they will not have been darkening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I darken?
will you darken?
will he darken?
will we darken?
will you darken?
will they darken? 	will I be darkening?
will you be darkening?
will he be darkening?
will we be darkening?
will you be darkening?
will they be darkening? 	will I have darkened?
will you have darkened?
will he have darkened?
will we have darkened?
will you have darkened?
will they have darkened? 	will I have been darkening?
will you have been darkening?
will he have been darkening?
will we have been darkening?
will you have been darkening?
will they have been darkening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I not darken?
will you not darken?
will he not darken?
will we not darken?
will you not darken?
will they not darken? 	will I not be darkening?
will you not be darkening?
will he not be darkening?
will we not be darkening?
will you not be darkening?
will they not be darkening? 	will I not have darkened?
will you not have darkened?
will he not have darkened?
will we not have darkened?
will you not have darkened?
will they not have darkened? 	will I not have been darkening?
will you not have been darkening?
will he not have been darkening?
will we not have been darkening?
will you not have been darkening?
will they not have been darkening?