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