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