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