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