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I'd been countermarching you'd been countermarching he'd been countermarching we'd been countermarching you'd been countermarching they'd been countermarching
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Future perfect
I'll have countermarched you'll have countermarched he'll have countermarched we'll have countermarched you'll have countermarched they'll have countermarched
Future perfect continuous
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I'd be countermarching you'd be countermarching he'd be countermarching we'd be countermarching you'd be countermarching they'd be countermarching
Past
I'd have countermarched you'd have countermarched he'd have countermarched we'd have countermarched you'd have countermarched they'd have countermarched
Past continuous
I'd have been countermarching you'd have been countermarching he'd have been countermarching we'd have been countermarching you'd have been countermarching they'd have been countermarching