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