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