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