shall 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 shan't darken
you shan't darken
she shan't darken
we shan't darken
you shan't darken
they shan't darken 	I shan't be darkening
you shan't be darkening
she shan't be darkening
we shan't be darkening
you shan't be darkening
they shan't be darkening	I shan't have darkened
you shan't have darkened
she shan't have darkened
we shan't have darkened
you shan't have darkened
they shan't have darkened	I shan't have been darkening
you shan't have been darkening
she shan't have been darkening
we shan't have been darkening
you shan't have been darkening
they shan't have been darkening	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I darken?
shan't you darken?
shan't she darken?
shan't we darken?
shan't you darken?
shan't they darken? 	shan't I be darkening?
shan't you be darkening?
shan't she be darkening?
shan't we be darkening?
shan't you be darkening?
shan't they be darkening? 	shan't I have darkened?
shan't you have darkened?
shan't she have darkened?
shan't we have darkened?
shan't you have darkened?
shan't they have darkened? 	shan't I have been darkening?
shan't you have been darkening?
shan't she have been darkening?
shan't we have been darkening?
shan't you have been darkening?
shan't they have been darkening?