do I not undertain? do you not undertain? does she not undertain? do we not undertain? do you not undertain? do they not undertain?
Present continuous
am I not undertaining? are you not undertaining? is she not undertaining? are we not undertaining? are you not undertaining? are they not undertaining?
Preterite
did I not undertain? did you not undertain? did she not undertain? did we not undertain? did you not undertain? did they not undertain?
Preterite continuous
was I not undertaining? were you not undertaining? was she not undertaining? were we not undertaining? were you not undertaining? were they not undertaining?
Present perfect
have I not undertained? have you not undertained? has she not undertained? have we not undertained? have you not undertained? have they not undertained?
Present perfect continuous
have I not been undertaining? have you not been undertaining? has she not been undertaining? have we not been undertaining? have you not been undertaining? have they not been undertaining?
Pluperfect
had I not undertained? had you not undertained? had she not undertained? had we not undertained? had you not undertained? had they not undertained?
Pluperfect continuous
had I not been undertaining? had you not been undertaining? had she not been undertaining? had we not been undertaining? had you not been undertaining? had they not been undertaining?
Future
will I not undertain? will you not undertain? will she not undertain? will we not undertain? will you not undertain? will they not undertain?
Future continuous
will I not be undertaining? will you not be undertaining? will she not be undertaining? will we not be undertaining? will you not be undertaining? will they not be undertaining?
Future perfect
will I not have undertained? will you not have undertained? will she not have undertained? will we not have undertained? will you not have undertained? will they not have undertained?
Future perfect continuous
will I not have been undertaining? will you not have been undertaining? will she not have been undertaining? will we not have been undertaining? will you not have been undertaining? will they not have been undertaining?
Conditional
Present
would I not undertain? would you not undertain? would she not undertain? would we not undertain? would you not undertain? would they not undertain?
Present continuous
would I not be undertaining? would you not be undertaining? would she not be undertaining? would we not be undertaining? would you not be undertaining? would they not be undertaining?
Past
would I not have undertained? would you not have undertained? would she not have undertained? would we not have undertained? would you not have undertained? would they not have undertained?
Past continuous
would I not have been undertaining? would you not have been undertaining? would she not have been undertaining? would we not have been undertaining? would you not have been undertaining? would they not have been undertaining?