I'll be ascertaining you'll be ascertaining she'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 she'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 she'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 she'd be ascertaining we'd be ascertaining you'd be ascertaining they'd be ascertaining
Passato
I'd have ascertained you'd have ascertained she'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 she'd have been ascertaining we'd have been ascertaining you'd have been ascertaining they'd have been ascertaining