I've been diphthongising you've been diphthongising he's been diphthongising we've been diphthongising you've been diphthongising they've been diphthongising
I'd been diphthongising you'd been diphthongising he'd been diphthongising we'd been diphthongising you'd been diphthongising they'd been diphthongising
I'll be diphthongising you'll be diphthongising he'll be diphthongising we'll be diphthongising you'll be diphthongising they'll be diphthongising
Futuro perfecto
I'll have diphthongised you'll have diphthongised he'll have diphthongised we'll have diphthongised you'll have diphthongised they'll have diphthongised
Futuro perfecto contínuo
I'll have been diphthongising you'll have been diphthongising he'll have been diphthongising we'll have been diphthongising you'll have been diphthongising they'll have been diphthongising
I'd be diphthongising you'd be diphthongising he'd be diphthongising we'd be diphthongising you'd be diphthongising they'd be diphthongising
Passado
I'd have diphthongised you'd have diphthongised he'd have diphthongised we'd have diphthongised you'd have diphthongised they'd have diphthongised
Passado continuo
I'd have been diphthongising you'd have been diphthongising he'd have been diphthongising we'd have been diphthongising you'd have been diphthongising they'd have been diphthongising