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 anteriore
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 anteriore 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
Passato
I'd have ascertained you'd have ascertained he'd have ascertained we'd have ascertained you'd have ascertained they'd have ascertained
Passato 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