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