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