do I not double-check? do you not double-check? does she not double-check? do we not double-check? do you not double-check? do they not double-check?
Present continuous
am I not double-checking? are you not double-checking? is she not double-checking? are we not double-checking? are you not double-checking? are they not double-checking?
Preterite
did I not double-check? did you not double-check? did she not double-check? did we not double-check? did you not double-check? did they not double-check?
Preterite continuous
was I not double-checking? were you not double-checking? was she not double-checking? were we not double-checking? were you not double-checking? were they not double-checking?
Present perfect
have I not double-checked? have you not double-checked? has she not double-checked? have we not double-checked? have you not double-checked? have they not double-checked?
Present perfect continuous
have I not been double-checking? have you not been double-checking? has she not been double-checking? have we not been double-checking? have you not been double-checking? have they not been double-checking?
Pluperfect
had I not double-checked? had you not double-checked? had she not double-checked? had we not double-checked? had you not double-checked? had they not double-checked?
Pluperfect continuous
had I not been double-checking? had you not been double-checking? had she not been double-checking? had we not been double-checking? had you not been double-checking? had they not been double-checking?
Future
will I not double-check? will you not double-check? will she not double-check? will we not double-check? will you not double-check? will they not double-check?
Future continuous
will I not be double-checking? will you not be double-checking? will she not be double-checking? will we not be double-checking? will you not be double-checking? will they not be double-checking?
Future perfect
will I not have double-checked? will you not have double-checked? will she not have double-checked? will we not have double-checked? will you not have double-checked? will they not have double-checked?
Future perfect continuous
will I not have been double-checking? will you not have been double-checking? will she not have been double-checking? will we not have been double-checking? will you not have been double-checking? will they not have been double-checking?
Conditional
Present
would I not double-check? would you not double-check? would she not double-check? would we not double-check? would you not double-check? would they not double-check?
Present continuous
would I not be double-checking? would you not be double-checking? would she not be double-checking? would we not be double-checking? would you not be double-checking? would they not be double-checking?
Past
would I not have double-checked? would you not have double-checked? would she not have double-checked? would we not have double-checked? would you not have double-checked? would they not have double-checked?
Past continuous
would I not have been double-checking? would you not have been double-checking? would she not have been double-checking? would we not have been double-checking? would you not have been double-checking? would they not have been double-checking?