do I not coffer? do you not coffer? does he not coffer? do we not coffer? do you not coffer? do they not coffer?
Present continuous
am I not coffering? are you not coffering? is he not coffering? are we not coffering? are you not coffering? are they not coffering?
Preterite
did I not coffer? did you not coffer? did he not coffer? did we not coffer? did you not coffer? did they not coffer?
Preterite continuous
was I not coffering? were you not coffering? was he not coffering? were we not coffering? were you not coffering? were they not coffering?
Present perfect
have I not coffered? have you not coffered? has he not coffered? have we not coffered? have you not coffered? have they not coffered?
Present perfect continuous
have I not been coffering? have you not been coffering? has he not been coffering? have we not been coffering? have you not been coffering? have they not been coffering?
Pluperfect
had I not coffered? had you not coffered? had he not coffered? had we not coffered? had you not coffered? had they not coffered?
Pluperfect continuous
had I not been coffering? had you not been coffering? had he not been coffering? had we not been coffering? had you not been coffering? had they not been coffering?
Future
will I not coffer? will you not coffer? will he not coffer? will we not coffer? will you not coffer? will they not coffer?
Future continuous
will I not be coffering? will you not be coffering? will he not be coffering? will we not be coffering? will you not be coffering? will they not be coffering?
Future perfect
will I not have coffered? will you not have coffered? will he not have coffered? will we not have coffered? will you not have coffered? will they not have coffered?
Future perfect continuous
will I not have been coffering? will you not have been coffering? will he not have been coffering? will we not have been coffering? will you not have been coffering? will they not have been coffering?
Conditional
Present
would I not coffer? would you not coffer? would he not coffer? would we not coffer? would you not coffer? would they not coffer?
Present continuous
would I not be coffering? would you not be coffering? would he not be coffering? would we not be coffering? would you not be coffering? would they not be coffering?
Past
would I not have coffered? would you not have coffered? would he not have coffered? would we not have coffered? would you not have coffered? would they not have coffered?
Past continuous
would I not have been coffering? would you not have been coffering? would he not have been coffering? would we not have been coffering? would you not have been coffering? would they not have been coffering?