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