I'll be persevering you'll be persevering he'll be persevering we'll be persevering you'll be persevering they'll be persevering
Futuro perfecto
I'll have persevered you'll have persevered he'll have persevered we'll have persevered you'll have persevered they'll have persevered
Futuro perfecto contínuo
I'll have been persevering you'll have been persevering he'll have been persevering we'll have been persevering you'll have been persevering they'll have been persevering
I'd be persevering you'd be persevering he'd be persevering we'd be persevering you'd be persevering they'd be persevering
Passado
I'd have persevered you'd have persevered he'd have persevered we'd have persevered you'd have persevered they'd have persevered
Passado continuo
I'd have been persevering you'd have been persevering he'd have been persevering we'd have been persevering you'd have been persevering they'd have been persevering