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