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