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