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