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