do I not occur? do you not occur? does he not occur? do we not occur? do you not occur? do they not occur?
Presente continuo
am I not occurring? are you not occurring? is he not occurring? are we not occurring? are you not occurring? are they not occurring?
Pretérito
did I not occur? did you not occur? did he not occur? did we not occur? did you not occur? did they not occur?
Pretérito continuo
was I not occurring? were you not occurring? was he not occurring? were we not occurring? were you not occurring? were they not occurring?
Presente perfecto
have I not occurred? have you not occurred? has he not occurred? have we not occurred? have you not occurred? have they not occurred?
Presente perfecto continuo
have I not been occurring? have you not been occurring? has he not been occurring? have we not been occurring? have you not been occurring? have they not been occurring?
Pluscuamperfecto
had I not occurred? had you not occurred? had he not occurred? had we not occurred? had you not occurred? had they not occurred?
Pluscuamperfecto continuo
had I not been occurring? had you not been occurring? had he not been occurring? had we not been occurring? had you not been occurring? had they not been occurring?
Futuro simple
will I not occur? will you not occur? will he not occur? will we not occur? will you not occur? will they not occur?
Futuro continuo
will I not be occurring? will you not be occurring? will he not be occurring? will we not be occurring? will you not be occurring? will they not be occurring?
Futuro perfecto
will I not have occurred? will you not have occurred? will he not have occurred? will we not have occurred? will you not have occurred? will they not have occurred?
Futuro perfecto contínuo
will I not have been occurring? will you not have been occurring? will he not have been occurring? will we not have been occurring? will you not have been occurring? will they not have been occurring?
Condicional
Presente
would I not occur? would you not occur? would he not occur? would we not occur? would you not occur? would they not occur?
Presente continuo
would I not be occurring? would you not be occurring? would he not be occurring? would we not be occurring? would you not be occurring? would they not be occurring?
Passado
would I not have occurred? would you not have occurred? would he not have occurred? would we not have occurred? would you not have occurred? would they not have occurred?
Passado continuo
would I not have been occurring? would you not have been occurring? would he not have been occurring? would we not have been occurring? would you not have been occurring? would they not have been occurring?