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