I'd been stammering you'd been stammering he'd been stammering we'd been stammering you'd been stammering they'd been stammering
Future
I'll stammer you'll stammer he'll stammer we'll stammer you'll stammer they'll stammer
Future continuous
I'll be stammering you'll be stammering he'll be stammering we'll be stammering you'll be stammering they'll be stammering
Future perfect
I'll have stammered you'll have stammered he'll have stammered we'll have stammered you'll have stammered they'll have stammered
Future perfect continuous
I'll have been stammering you'll have been stammering he'll have been stammering we'll have been stammering you'll have been stammering they'll have been stammering
Conditional
Present
I'd stammer you'd stammer he'd stammer we'd stammer you'd stammer they'd stammer
Present continuous
I'd be stammering you'd be stammering he'd be stammering we'd be stammering you'd be stammering they'd be stammering
Past
I'd have stammered you'd have stammered he'd have stammered we'd have stammered you'd have stammered they'd have stammered
Past continuous
I'd have been stammering you'd have been stammering he'd have been stammering we'd have been stammering you'd have been stammering they'd have been stammering