Solution:Given series
(Left) H T Z C T & T * % 7 & Y % 6 U K & 2 R T 7 9 Y S 3 5 E * S & D 9 # 6 * (Right) According to the question, if all the numbers are dropped, we get
H T Z C T & T * % & Y % U K & R T Y S E * S & D # *
Now, sixth element from the right : *
Therefore, the fourth to the left of sixth from the right is T.