English verb conjugation
MAY DARKEN

Regular verb: darken - darkened - darkened

Affirmation

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

Negation

Simple form	V-ing form
I may not darken you may not darken she may not darken we may not darken you may not darken they may not darken	I may not be darkening you may not be darkening she may not be darkening we may not be darkening you may not be darkening they may not be darkening
Perfect	V-ing perfect
I may not have darkened you may not have darkened she may not have darkened we may not have darkened you may not have darkened they may not have darkened	I may not have been darkening you may not have been darkening she may not have been darkening we may not have been darkening you may not have been darkening they may not have been darkening

Interrogative form

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

Interro-negative form

Simple form	V-ing form
may I not darken? may you not darken? may she not darken? may we not darken? may you not darken? may they not darken?	may I not be darkening? may you not be darkening? may she not be darkening? may we not be darkening? may you not be darkening? may they not be darkening?
Perfect	V-ing perfect
may I not have darkened? may you not have darkened? may she not have darkened? may we not have darkened? may you not have darkened? may they not have darkened?	may I not have been darkening? may you not have been darkening? may she not have been darkening? may we not have been darkening? may you not have been darkening? may they not have been darkening?