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