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