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