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