don't I darken? don't you darken? doesn't he darken? don't we darken? don't you darken? don't they darken?
Present continuous
am I not darkening? aren't you darkening? isn't he darkening? aren't we darkening? aren't you darkening? aren't they darkening?
Preterite
didn't I darken? didn't you darken? didn't he darken? didn't we darken? didn't you darken? didn't they darken?
Preterite continuous
wasn't I darkening? weren't you darkening? wasn't he darkening? weren't we darkening? weren't you darkening? weren't they darkening?
Present perfect
haven't I darkened? haven't you darkened? hasn't he darkened? haven't we darkened? haven't you darkened? haven't they darkened?
Present perfect continuous
haven't I been darkening? haven't you been darkening? hasn't he been darkening? haven't we been darkening? haven't you been darkening? haven't they been darkening?
Pluperfect
hadn't I darkened? hadn't you darkened? hadn't he darkened? hadn't we darkened? hadn't you darkened? hadn't they darkened?
Pluperfect continuous
hadn't I been darkening? hadn't you been darkening? hadn't he been darkening? hadn't we been darkening? hadn't you been darkening? hadn't they been darkening?
Future
won't I darken? won't you darken? won't he darken? won't we darken? won't you darken? won't they darken?
Future continuous
won't I be darkening? won't you be darkening? won't he be darkening? won't we be darkening? won't you be darkening? won't they be darkening?
Future perfect
won't I have darkened? won't you have darkened? won't he have darkened? won't we have darkened? won't you have darkened? won't they have darkened?
Future perfect continuous
won't I have been darkening? won't you have been darkening? won't he have been darkening? won't we have been darkening? won't you have been darkening? won't they have been darkening?
Conditional
Present
wouldn't I darken? wouldn't you darken? wouldn't he darken? wouldn't we darken? wouldn't you darken? wouldn't they darken?
Present continuous
wouldn't I be darkening? wouldn't you be darkening? wouldn't he be darkening? wouldn't we be darkening? wouldn't you be darkening? wouldn't they be darkening?
Past
wouldn't I have darkened? wouldn't you have darkened? wouldn't he have darkened? wouldn't we have darkened? wouldn't you have darkened? wouldn't they have darkened?
Past continuous
wouldn't I have been darkening? wouldn't you have been darkening? wouldn't he have been darkening? wouldn't we have been darkening? wouldn't you have been darkening? wouldn't they have been darkening?