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