do I undertake? do you undertake? does she undertake? do we undertake? do you undertake? do they undertake?
Present continuous
am I undertaking? are you undertaking? is she undertaking? are we undertaking? are you undertaking? are they undertaking?
Preterite
did I undertake? did you undertake? did she undertake? did we undertake? did you undertake? did they undertake?
Preterite continuous
was I undertaking? were you undertaking? was she undertaking? were we undertaking? were you undertaking? were they undertaking?
Present perfect
have I undertaken? have you undertaken? has she undertaken? have we undertaken? have you undertaken? have they undertaken?
Present perfect continuous
have I been undertaking? have you been undertaking? has she been undertaking? have we been undertaking? have you been undertaking? have they been undertaking?
Pluperfect
had I undertaken? had you undertaken? had she undertaken? had we undertaken? had you undertaken? had they undertaken?
Pluperfect continuous
had I been undertaking? had you been undertaking? had she been undertaking? had we been undertaking? had you been undertaking? had they been undertaking?
Future
will I undertake? will you undertake? will she undertake? will we undertake? will you undertake? will they undertake?
Future continuous
will I be undertaking? will you be undertaking? will she be undertaking? will we be undertaking? will you be undertaking? will they be undertaking?
Future perfect
will I have undertaken? will you have undertaken? will she have undertaken? will we have undertaken? will you have undertaken? will they have undertaken?
Future perfect continuous
will I have been undertaking? will you have been undertaking? will she have been undertaking? will we have been undertaking? will you have been undertaking? will they have been undertaking?
Conditional
Present
would I undertake? would you undertake? would she undertake? would we undertake? would you undertake? would they undertake?
Present continuous
would I be undertaking? would you be undertaking? would she be undertaking? would we be undertaking? would you be undertaking? would they be undertaking?
Past
would I have undertaken? would you have undertaken? would she have undertaken? would we have undertaken? would you have undertaken? would they have undertaken?
Past continuous
would I have been undertaking? would you have been undertaking? would she have been undertaking? would we have been undertaking? would you have been undertaking? would they have been undertaking?