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.

Example Input: 10, 27, ['z', '7203', 'd', '1795', '45', '1803', 'L', '2839', '6285', 'W', '1969', 'x', '6565', '8849', '6091', 'M', '7925', '37', 'h', '381', '59', 'O', '3283', 'u', '9831', 'Y', '5701', '7249', 'w']
Example Output: 1075Y1389u3823O95183h735297M190694885656x9691W

Example Input: 1, 12, ['f', '8665', '6205', 'L', 'y', 'P', '9351', 'k', '1387', '657', 's', 'k']
Example Output: ks7567831k1539PyL50265668f

Example Input: 10, 17, ['9695', '2973', 'n', 'r', 'N', '3399', 'N', 'W', '2849', 'U', '7841', 'B', '121', 'R', '1481', 'R', 'R', 'i', '5823', '3933', 'Q', '6015', '1183', '5131', '7267', 'G']
Example Output:
RR1841R121B1487U