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