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