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