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