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]: 1, 6, ['7675', '2039', 'u', 'w', '8039', 'e', 'q']
[EX A]: e9308wu93025767

[EX Q]: 2, 8, ['O', '4833', '7055', '9891', '9117', '1571', 'S', 'Z', '7741', 'W', 't']
[EX A]: ZS17517119198955073384

[EX Q]: 7, 14, ['9711', 'Q', 'S', '8193', 'e', 'f', '4315', 'j', 'd', 'r', '3129', 'i', '5097', 'B', '5271', 'f', '6611', '29', 'P', '6067', 'z', 'I', '463', 'G', '3921', 'm']
[EX A]:
B7905i9213rdj5134