don't I countersink? don't you countersink? doesn't she countersink? don't we countersink? don't you countersink? don't they countersink?
Present continuous
am I not countersinking? aren't you countersinking? isn't she countersinking? aren't we countersinking? aren't you countersinking? aren't they countersinking?
Preterite
didn't I countersink? didn't you countersink? didn't she countersink? didn't we countersink? didn't you countersink? didn't they countersink?
Preterite continuous
wasn't I countersinking? weren't you countersinking? wasn't she countersinking? weren't we countersinking? weren't you countersinking? weren't they countersinking?
Present perfect
haven't I countersunk? haven't you countersunk? hasn't she countersunk? haven't we countersunk? haven't you countersunk? haven't they countersunk?
Present perfect continuous
haven't I been countersinking? haven't you been countersinking? hasn't she been countersinking? haven't we been countersinking? haven't you been countersinking? haven't they been countersinking?
Pluperfect
hadn't I countersunk? hadn't you countersunk? hadn't she countersunk? hadn't we countersunk? hadn't you countersunk? hadn't they countersunk?
Pluperfect continuous
hadn't I been countersinking? hadn't you been countersinking? hadn't she been countersinking? hadn't we been countersinking? hadn't you been countersinking? hadn't they been countersinking?
Future
won't I countersink? won't you countersink? won't she countersink? won't we countersink? won't you countersink? won't they countersink?
Future continuous
won't I be countersinking? won't you be countersinking? won't she be countersinking? won't we be countersinking? won't you be countersinking? won't they be countersinking?
Future perfect
won't I have countersunk? won't you have countersunk? won't she have countersunk? won't we have countersunk? won't you have countersunk? won't they have countersunk?
Future perfect continuous
won't I have been countersinking? won't you have been countersinking? won't she have been countersinking? won't we have been countersinking? won't you have been countersinking? won't they have been countersinking?
Conditional
Present
wouldn't I countersink? wouldn't you countersink? wouldn't she countersink? wouldn't we countersink? wouldn't you countersink? wouldn't they countersink?
Present continuous
wouldn't I be countersinking? wouldn't you be countersinking? wouldn't she be countersinking? wouldn't we be countersinking? wouldn't you be countersinking? wouldn't they be countersinking?
Past
wouldn't I have countersunk? wouldn't you have countersunk? wouldn't she have countersunk? wouldn't we have countersunk? wouldn't you have countersunk? wouldn't they have countersunk?
Past continuous
wouldn't I have been countersinking? wouldn't you have been countersinking? wouldn't she have been countersinking? wouldn't we have been countersinking? wouldn't you have been countersinking? wouldn't they have been countersinking?