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