I'll be substituting you'll be substituting he'll be substituting we'll be substituting you'll be substituting they'll be substituting
Futuro anteriore
I'll have substituted you'll have substituted he'll have substituted we'll have substituted you'll have substituted they'll have substituted
Futuro anteriore contínuo
I'll have been substituting you'll have been substituting he'll have been substituting we'll have been substituting you'll have been substituting they'll have been substituting
I'd be substituting you'd be substituting he'd be substituting we'd be substituting you'd be substituting they'd be substituting
Passato
I'd have substituted you'd have substituted he'd have substituted we'd have substituted you'd have substituted they'd have substituted
Passato continuo
I'd have been substituting you'd have been substituting he'd have been substituting we'd have been substituting you'd have been substituting they'd have been substituting