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