do I not grate? do you not grate? does he not grate? do we not grate? do you not grate? do they not grate?
Present continuous
am I not grating? are you not grating? is he not grating? are we not grating? are you not grating? are they not grating?
Preterite
did I not grate? did you not grate? did he not grate? did we not grate? did you not grate? did they not grate?
Preterite continuous
was I not grating? were you not grating? was he not grating? were we not grating? were you not grating? were they not grating?
Present perfect
have I not grated? have you not grated? has he not grated? have we not grated? have you not grated? have they not grated?
Present perfect continuous
have I not been grating? have you not been grating? has he not been grating? have we not been grating? have you not been grating? have they not been grating?
Pluperfect
had I not grated? had you not grated? had he not grated? had we not grated? had you not grated? had they not grated?
Pluperfect continuous
had I not been grating? had you not been grating? had he not been grating? had we not been grating? had you not been grating? had they not been grating?
Future
will I not grate? will you not grate? will he not grate? will we not grate? will you not grate? will they not grate?
Future continuous
will I not be grating? will you not be grating? will he not be grating? will we not be grating? will you not be grating? will they not be grating?
Future perfect
will I not have grated? will you not have grated? will he not have grated? will we not have grated? will you not have grated? will they not have grated?
Future perfect continuous
will I not have been grating? will you not have been grating? will he not have been grating? will we not have been grating? will you not have been grating? will they not have been grating?
Conditional
Present
would I not grate? would you not grate? would he not grate? would we not grate? would you not grate? would they not grate?
Present continuous
would I not be grating? would you not be grating? would he not be grating? would we not be grating? would you not be grating? would they not be grating?
Past
would I not have grated? would you not have grated? would he not have grated? would we not have grated? would you not have grated? would they not have grated?
Past continuous
would I not have been grating? would you not have been grating? would he not have been grating? would we not have been grating? would you not have been grating? would they not have been grating?