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