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