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