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