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