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