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