I'll be retrofiting you'll be retrofiting he'll be retrofiting we'll be retrofiting you'll be retrofiting they'll be retrofiting
Future perfect
I'll have retrofit you'll have retrofit he'll have retrofit we'll have retrofit you'll have retrofit they'll have retrofit
Future perfect continuous
I'll have been retrofiting you'll have been retrofiting he'll have been retrofiting we'll have been retrofiting you'll have been retrofiting they'll have been retrofiting
I'd be retrofiting you'd be retrofiting he'd be retrofiting we'd be retrofiting you'd be retrofiting they'd be retrofiting
Past
I'd have retrofit you'd have retrofit he'd have retrofit we'd have retrofit you'd have retrofit they'd have retrofit
Past continuous
I'd have been retrofiting you'd have been retrofiting he'd have been retrofiting we'd have been retrofiting you'd have been retrofiting they'd have been retrofiting