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: 1, 7, ['P', 'h', '1443', 'b', 'K', '2641', '3831']
Example Output: 13831462Kb3441hP

Example Input: 16, 16, ['7539', 'A', '8589', 'T', 'Q', 'u', 'z', 'A', '9751', '2913', '7453', '5649', 'Q', 'H', 'Z', 'O', 'v', 'V']
Example Output: O

Example Input: 3, 20, ['65', 'w', '1409', 'J', '8347', 'p', 'J', '1105', '6271', 'N', 'U', '5643', '2485', '2291', '9881', '9409', '1921', '9241', 'm', '4633', 'F', '7073', 'm', 'V', '1325', '2217', 'u']
Example Output:
3364m1429129190491889192258423465UN17265011Jp7438J9041