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I'll be preannouncing you'll be preannouncing he'll be preannouncing we'll be preannouncing you'll be preannouncing they'll be preannouncing
Future perfect
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Future perfect continuous
I'll have been preannouncing you'll have been preannouncing he'll have been preannouncing we'll have been preannouncing you'll have been preannouncing they'll have been preannouncing
I'd be preannouncing you'd be preannouncing he'd be preannouncing we'd be preannouncing you'd be preannouncing they'd be preannouncing
Past
I'd have preannounced you'd have preannounced he'd have preannounced we'd have preannounced you'd have preannounced they'd have preannounced
Past continuous
I'd have been preannouncing you'd have been preannouncing he'd have been preannouncing we'd have been preannouncing you'd have been preannouncing they'd have been preannouncing