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]: 21, 28, ['8641', 'o', '1301', '8225', '8079', 'Y', 'O', '9571', 'n', 'Q', 'n', 'W', '6555', 'm', 'A', 'A', '4459', '5983', '5469', 'd', '6269', 'E', '2107', 'X', '8397', 'f', 'D', '9129']
[EX A]: 9219Df7938X7012E9626

[EX Q]: 2, 4, ['B', '5601', 'v', '7431', 'z']
[EX A]: 1347v1065

[EX Q]: 14, 15, ['u', '6753', '4685', 'i', 'Q', 'X', 'Z', '5373', 'R', 'W', 'h', '3723', '6327', 'd', 'r', 'J', 'l', '5909']
[EX A]:
rd