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