I'd be massacring you'd be massacring she'd be massacring we'd be massacring you'd be massacring they'd be massacring
Perfect
I should've massacred you should've massacred she should've massacred we should've massacred you should've massacred they should've massacred
V-ing perfect
I should've been massacring you should've been massacring she should've been massacring we should've been massacring you should've been massacring they should've been massacring
Negation
Simple form
I shouldn't massacre you shouldn't massacre she shouldn't massacre we shouldn't massacre you shouldn't massacre they shouldn't massacre
V-ing form
I shouldn't be massacring you shouldn't be massacring she shouldn't be massacring we shouldn't be massacring you shouldn't be massacring they shouldn't be massacring
Perfect
I shouldn't have massacred you shouldn't have massacred she shouldn't have massacred we shouldn't have massacred you shouldn't have massacred they shouldn't have massacred
V-ing perfect
I shouldn't have been massacring you shouldn't have been massacring she shouldn't have been massacring we shouldn't have been massacring you shouldn't have been massacring they shouldn't have been massacring
Interrogative form
Simple form
should I massacre? should you massacre? should she massacre? should we massacre? should you massacre? should they massacre?
V-ing form
should I be massacring? should you be massacring? should she be massacring? should we be massacring? should you be massacring? should they be massacring?
Perfect
should I have massacred? should you have massacred? should she have massacred? should we have massacred? should you have massacred? should they have massacred?
V-ing perfect
should I have been massacring? should you have been massacring? should she have been massacring? should we have been massacring? should you have been massacring? should they have been massacring?
Interro-negative form
Simple form
shouldn't I massacre? shouldn't you massacre? shouldn't she massacre? shouldn't we massacre? shouldn't you massacre? shouldn't they massacre?
V-ing form
shouldn't I be massacring? shouldn't you be massacring? shouldn't she be massacring? shouldn't we be massacring? shouldn't you be massacring? shouldn't they be massacring?
Perfect
shouldn't I have massacred? shouldn't you have massacred? shouldn't she have massacred? shouldn't we have massacred? shouldn't you have massacred? shouldn't they have massacred?
V-ing perfect
shouldn't I have been massacring? shouldn't you have been massacring? shouldn't she have been massacring? shouldn't we have been massacring? shouldn't you have been massacring? shouldn't they have been massacring?