will darken
Regular verb: darken - darkened- darkened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll darken
you'll darken
she'll darken
we'll darken
you'll darken
they'll darken 	I'll be darkening
you'll be darkening
she'll be darkening
we'll be darkening
you'll be darkening
they'll be darkening	I'll have darkened
you'll have darkened
she'll have darkened
we'll have darkened
you'll have darkened
they'll have darkened	I'll have been darkening
you'll have been darkening
she'll have been darkening
we'll have been darkening
you'll have been darkening
they'll have been darkening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I won't darken
you won't darken
she won't darken
we won't darken
you won't darken
they won't darken 	I won't be darkening
you won't be darkening
she won't be darkening
we won't be darkening
you won't be darkening
they won't be darkening	I won't have darkened
you won't have darkened
she won't have darkened
we won't have darkened
you won't have darkened
they won't have darkened	I won't have been darkening
you won't have been darkening
she won't have been darkening
we won't have been darkening
you won't have been darkening
they won't have been darkening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I darken?
will you darken?
will she darken?
will we darken?
will you darken?
will they darken? 	will I be darkening?
will you be darkening?
will she be darkening?
will we be darkening?
will you be darkening?
will they be darkening? 	will I have darkened?
will you have darkened?
will she 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 she 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 	
won't I darken?
won't you darken?
won't she darken?
won't we darken?
won't you darken?
won't they darken? 	won't I be darkening?
won't you be darkening?
won't she be darkening?
won't we be darkening?
won't you be darkening?
won't they be darkening? 	won't I have darkened?
won't you have darkened?
won't she have darkened?
won't we have darkened?
won't you have darkened?
won't they have darkened? 	won't I have been darkening?
won't you have been darkening?
won't she have been darkening?
won't we have been darkening?
won't you have been darkening?
won't they have been darkening?