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