I've been preguaranteeing you've been preguaranteeing she's been preguaranteeing we've been preguaranteeing you've been preguaranteeing they've been preguaranteeing
I'd been preguaranteeing you'd been preguaranteeing she'd been preguaranteeing we'd been preguaranteeing you'd been preguaranteeing they'd been preguaranteeing
I'll be preguaranteeing you'll be preguaranteeing she'll be preguaranteeing we'll be preguaranteeing you'll be preguaranteeing they'll be preguaranteeing
Future perfect
I'll have preguaranteed you'll have preguaranteed she'll have preguaranteed we'll have preguaranteed you'll have preguaranteed they'll have preguaranteed
Future perfect continuous
I'll have been preguaranteeing you'll have been preguaranteeing she'll have been preguaranteeing we'll have been preguaranteeing you'll have been preguaranteeing they'll have been preguaranteeing
I'd be preguaranteeing you'd be preguaranteeing she'd be preguaranteeing we'd be preguaranteeing you'd be preguaranteeing they'd be preguaranteeing
Past
I'd have preguaranteed you'd have preguaranteed she'd have preguaranteed we'd have preguaranteed you'd have preguaranteed they'd have preguaranteed
Past continuous
I'd have been preguaranteeing you'd have been preguaranteeing she'd have been preguaranteeing we'd have been preguaranteeing you'd have been preguaranteeing they'd have been preguaranteeing