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