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