Tigran says the files
Every line: White puts the bishop on (square). Rank 5, files A to H, flash model.
Set 1: A5
A
B
C
D
E
F
G
H
Set 2: A-5
A
B
C
D
E
F
G
H
Set 3: A 5
A
B
C
D
E
F
G
H
Today: "A" five, b five (what the Grünfeld was recorded with)
A
B
C
D
E
F
G
H