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