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.

[Q]: 1, 2, ['4857', '9647']
[A]: 74697584


[Q]: 17, 18, ['1795', '6295', '9741', '1375', '8077', 'y', '6465', 'q', '889', 'E', 'N', 'S', '6665', 'H', '2343', 'J', '3369', '5475', 'e', '9991', 'B', 'E', '2317', 'a', 'T', '7337', 'G', '2469', 'D']
[A]: 57459633


[Q]: 17, 19, ['V', '1997', 'b', 'E', 'S', 'f', '1461', '9347', 'E', 'u', '2521', 'n', 'q', '4681', '8711', 'Q', 'U', 'M', '9829', 'z']
[A]:
9289MU