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