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