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