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