do I darken? do you darken? does she darken? do we darken? do you darken? do they darken?
Present continuous
am I darkening? are you darkening? is she darkening? are we darkening? are you darkening? are they darkening?
Preterite
did I darken? did you darken? did she darken? did we darken? did you darken? did they darken?
Preterite continuous
was I darkening? were you darkening? was she darkening? were we darkening? were you darkening? were they darkening?
Present perfect
have I darkened? have you darkened? has she darkened? have we darkened? have you darkened? have they darkened?
Present perfect continuous
have I been darkening? have you been darkening? has she been darkening? have we been darkening? have you been darkening? have they been darkening?
Pluperfect
had I darkened? had you darkened? had she darkened? had we darkened? had you darkened? had they darkened?
Pluperfect continuous
had I been darkening? had you been darkening? had she been darkening? had we been darkening? had you been darkening? had they been darkening?
Future
will I darken? will you darken? will she darken? will we darken? will you darken? will they darken?
Future continuous
will I be darkening? will you be darkening? will she be darkening? will we be darkening? will you be darkening? will they be darkening?
Future perfect
will I have darkened? will you have darkened? will she have darkened? will we have darkened? will you have darkened? will they have darkened?
Future perfect continuous
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?
Conditional
Present
would I darken? would you darken? would she darken? would we darken? would you darken? would they darken?
Present continuous
would I be darkening? would you be darkening? would she be darkening? would we be darkening? would you be darkening? would they be darkening?
Past
would I have darkened? would you have darkened? would she have darkened? would we have darkened? would you have darkened? would they have darkened?
Past continuous
would I have been darkening? would you have been darkening? would she have been darkening? would we have been darkening? would you have been darkening? would they have been darkening?