I've been chain-smoking you've been chain-smoking he's been chain-smoking we've been chain-smoking you've been chain-smoking they've been chain-smoking
I'll be chain-smoking you'll be chain-smoking he'll be chain-smoking we'll be chain-smoking you'll be chain-smoking they'll be chain-smoking
Future perfect
I'll have chain-smoked you'll have chain-smoked he'll have chain-smoked we'll have chain-smoked you'll have chain-smoked they'll have chain-smoked
Future perfect continuous
I'll have been chain-smoking you'll have been chain-smoking he'll have been chain-smoking we'll have been chain-smoking you'll have been chain-smoking they'll have been chain-smoking
I'd be chain-smoking you'd be chain-smoking he'd be chain-smoking we'd be chain-smoking you'd be chain-smoking they'd be chain-smoking
Past
I'd have chain-smoked you'd have chain-smoked he'd have chain-smoked we'd have chain-smoked you'd have chain-smoked they'd have chain-smoked
Past continuous
I'd have been chain-smoking you'd have been chain-smoking he'd have been chain-smoking we'd have been chain-smoking you'd have been chain-smoking they'd have been chain-smoking