Refer to the given number symbol series and answer the question given below.
(Left) 2 $ % $ # 5 1 # 2 & 5 @ 4 2 * % & @ 2 1 # 3 ^ 5 7 9 @ 3 # % & (Right)
How many such numbers are there (from left to right) which are immediately preceded by a symbol and also immediately followed by a symbol?
1
4
2
2
3
3
4
6