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