English verb conjugation
MAY DARKEN

Regular verb: darken - darkened - darkened

Affirmation

Simple form	V-ing form
I may darken you may darken he may darken we may darken you may darken they may darken	I may be darkening you may be darkening he 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 he 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 he 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 mayn't darken you mayn't darken he mayn't darken we mayn't darken you mayn't darken they mayn't darken	I mayn't be darkening you mayn't be darkening he mayn't be darkening we mayn't be darkening you mayn't be darkening they mayn't be darkening
Perfect	V-ing perfect
I mayn't have darkened you mayn't have darkened he mayn't have darkened we mayn't have darkened you mayn't have darkened they mayn't have darkened	I mayn't have been darkening you mayn't have been darkening he mayn't have been darkening we mayn't have been darkening you mayn't have been darkening they mayn't have been darkening

Interrogative form

Simple form	V-ing form
may I darken? may you darken? may he darken? may we darken? may you darken? may they darken?	may I be darkening? may you be darkening? may he 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 he 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 he 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
mayn't I darken? mayn't you darken? mayn't he darken? mayn't we darken? mayn't you darken? mayn't they darken?	mayn't I be darkening? mayn't you be darkening? mayn't he be darkening? mayn't we be darkening? mayn't you be darkening? mayn't they be darkening?
Perfect	V-ing perfect
mayn't I have darkened? mayn't you have darkened? mayn't he have darkened? mayn't we have darkened? mayn't you have darkened? mayn't they have darkened?	mayn't I have been darkening? mayn't you have been darkening? mayn't he have been darkening? mayn't we have been darkening? mayn't you have been darkening? mayn't they have been darkening?