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