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