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