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