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