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