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