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