In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.

[EX Q]: 3, 11, ['V', '9869', 'f', 'X', '3395', 'k', 'B', '6407', 'J', 'Y', 'B', '5067', '4041', 'g', '5145', '8983', 'o', 'D']
[EX A]: BYJ7046Bk5933Xf

[EX Q]: 9, 14, ['d', '7259', 'A', 'U', '7005', 'P', '8215', '8925', 'e', 'x', '1265', 'H', '4075', 'J', 'G']
[EX A]: J5704H5621xe

[EX Q]: 13, 23, ['f', 'T', 's', 'O', '1907', 'N', 'e', '619', 'j', 'l', 'b', '7111', '7933', 'C', 'h', 'E', 'S', 'm', '3937', 'p', '623', '3297', 'U', '3599']
[EX A]:
U7923326p7393mSEhC3397