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