I prevent prevented you prevent prevented he prevent prevented we prevent prevented you prevent prevented they prevent prevented
Preterite continuous
I was prevent preventing you were prevent preventing he was prevent preventing we were prevent preventing you were prevent preventing they were prevent preventing
I've been prevent preventing you've been prevent preventing he's been prevent preventing we've been prevent preventing you've been prevent preventing they've been prevent preventing
I'd been prevent preventing you'd been prevent preventing he'd been prevent preventing we'd been prevent preventing you'd been prevent preventing they'd been prevent preventing
I'll be prevent preventing you'll be prevent preventing he'll be prevent preventing we'll be prevent preventing you'll be prevent preventing they'll be prevent preventing
Future perfect
I'll have prevent prevented you'll have prevent prevented he'll have prevent prevented we'll have prevent prevented you'll have prevent prevented they'll have prevent prevented
Future perfect continuous
I'll have been prevent preventing you'll have been prevent preventing he'll have been prevent preventing we'll have been prevent preventing you'll have been prevent preventing they'll have been prevent preventing
I'd be prevent preventing you'd be prevent preventing he'd be prevent preventing we'd be prevent preventing you'd be prevent preventing they'd be prevent preventing
Past
I'd have prevent prevented you'd have prevent prevented he'd have prevent prevented we'd have prevent prevented you'd have prevent prevented they'd have prevent prevented
Past continuous
I'd have been prevent preventing you'd have been prevent preventing he'd have been prevent preventing we'd have been prevent preventing you'd have been prevent preventing they'd have been prevent preventing