I'd be befalling you'd be befalling he'd be befalling we'd be befalling you'd be befalling they'd be befalling
Perfect
I should've befallen you should've befallen he should've befallen we should've befallen you should've befallen they should've befallen
V-ing perfect
I should've been befalling you should've been befalling he should've been befalling we should've been befalling you should've been befalling they should've been befalling
Negation
Simple form
I shouldn't befall you shouldn't befall he shouldn't befall we shouldn't befall you shouldn't befall they shouldn't befall
V-ing form
I shouldn't be befalling you shouldn't be befalling he shouldn't be befalling we shouldn't be befalling you shouldn't be befalling they shouldn't be befalling
Perfect
I shouldn't have befallen you shouldn't have befallen he shouldn't have befallen we shouldn't have befallen you shouldn't have befallen they shouldn't have befallen
V-ing perfect
I shouldn't have been befalling you shouldn't have been befalling he shouldn't have been befalling we shouldn't have been befalling you shouldn't have been befalling they shouldn't have been befalling
Interrogative form
Simple form
should I befall? should you befall? should he befall? should we befall? should you befall? should they befall?
V-ing form
should I be befalling? should you be befalling? should he be befalling? should we be befalling? should you be befalling? should they be befalling?
Perfect
should I have befallen? should you have befallen? should he have befallen? should we have befallen? should you have befallen? should they have befallen?
V-ing perfect
should I have been befalling? should you have been befalling? should he have been befalling? should we have been befalling? should you have been befalling? should they have been befalling?
Interro-negative form
Simple form
shouldn't I befall? shouldn't you befall? shouldn't he befall? shouldn't we befall? shouldn't you befall? shouldn't they befall?
V-ing form
shouldn't I be befalling? shouldn't you be befalling? shouldn't he be befalling? shouldn't we be befalling? shouldn't you be befalling? shouldn't they be befalling?
Perfect
shouldn't I have befallen? shouldn't you have befallen? shouldn't he have befallen? shouldn't we have befallen? shouldn't you have befallen? shouldn't they have befallen?
V-ing perfect
shouldn't I have been befalling? shouldn't you have been befalling? shouldn't he have been befalling? shouldn't we have been befalling? shouldn't you have been befalling? shouldn't they have been befalling?