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