do I study? do you study? does he study? do we study? do you study? do they study?
Present continuous
am I studying? are you studying? is he studying? are we studying? are you studying? are they studying?
Preterite
did I study? did you study? did he study? did we study? did you study? did they study?
Preterite continuous
was I studying? were you studying? was he studying? were we studying? were you studying? were they studying?
Present perfect
have I studied? have you studied? has he studied? have we studied? have you studied? have they studied?
Present perfect continuous
have I been studying? have you been studying? has he been studying? have we been studying? have you been studying? have they been studying?
Pluperfect
had I studied? had you studied? had he studied? had we studied? had you studied? had they studied?
Pluperfect continuous
had I been studying? had you been studying? had he been studying? had we been studying? had you been studying? had they been studying?
Future
will I study? will you study? will he study? will we study? will you study? will they study?
Future continuous
will I be studying? will you be studying? will he be studying? will we be studying? will you be studying? will they be studying?
Future perfect
will I have studied? will you have studied? will he have studied? will we have studied? will you have studied? will they have studied?
Future perfect continuous
will I have been studying? will you have been studying? will he have been studying? will we have been studying? will you have been studying? will they have been studying?
Conditional
Present
would I study? would you study? would he study? would we study? would you study? would they study?
Present continuous
would I be studying? would you be studying? would he be studying? would we be studying? would you be studying? would they be studying?
Past
would I have studied? would you have studied? would he have studied? would we have studied? would you have studied? would they have studied?
Past continuous
would I have been studying? would you have been studying? would he have been studying? would we have been studying? would you have been studying? would they have been studying?