I've been systematising you've been systematising he's been systematising we've been systematising you've been systematising they've been systematising
I'll be systematising you'll be systematising he'll be systematising we'll be systematising you'll be systematising they'll be systematising
futuro perfeito
I'll have systematised you'll have systematised he'll have systematised we'll have systematised you'll have systematised they'll have systematised
futuro perfeito contínuo
I'll have been systematising you'll have been systematising he'll have been systematising we'll have been systematising you'll have been systematising they'll have been systematising
I'd be systematising you'd be systematising he'd be systematising we'd be systematising you'd be systematising they'd be systematising
Passado
I'd have systematised you'd have systematised he'd have systematised we'd have systematised you'd have systematised they'd have systematised
Passado contínuo
I'd have been systematising you'd have been systematising he'd have been systematising we'd have been systematising you'd have been systematising they'd have been systematising