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