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