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