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