Transaction (0, 0)
WRITE(0, 0)

Transaction (1, 1)
READ(0, 0)
WRITE(0, 1)

Transaction (1, 2)
READ(0, 1)
WRITE(0, 2)

Transaction (1, 3)
READ(0, 2)
WRITE(0, 3)

Transaction (1, 4)
READ(0, 3)
WRITE(0, 4)

Transaction (1, 5)
READ(0, 4)
WRITE(0, 5)

Transaction (1, 6)
READ(0, 5)
WRITE(0, 6)

Transaction (1, 7)
READ(0, 19)
WRITE(0, 7)

Transaction (1, 8)
READ(0, 7)
WRITE(0, 8)

Transaction (1, 9)
READ(0, 8)
WRITE(0, 9)

Transaction (1, 10)
READ(0, 9)
WRITE(0, 10)

Transaction (2, 11)
READ(0, 1)
WRITE(0, 11)

Transaction (2, 12)
READ(0, 11)
WRITE(0, 12)

Transaction (2, 13)
READ(0, 4)
WRITE(0, 13)

Transaction (2, 14)
READ(0, 6)
WRITE(0, 14)

Transaction (2, 15)
READ(0, 14)
WRITE(0, 15)

Transaction (2, 16)
READ(0, 15)
WRITE(0, 16)

Transaction (2, 17)
READ(0, 16)
WRITE(0, 17)

Transaction (2, 18)
READ(0, 17)
WRITE(0, 18)

Transaction (2, 19)
READ(0, 18)
WRITE(0, 19)

Transaction (2, 20)
READ(0, 19)
WRITE(0, 20)