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: 8, 21, ['9847', '3163', 'L', 'E', 's', 'I', 'H', 'e', 'l', '8875', '547', 'F', '4221', '5105', '5409', 'M', '6617', 'Z', 'g', '9257', 'l', 'q', 'p', 'Q', '6755', '265', '9845']
Example Output: l7529gZ7166M904550151224F7455788le

Example Input: 8, 16, ['7751', 'Q', '9819', 'k', 'g', 'y', 'W', 'I', '6371', '9859', 'f', '7055', 's', 'I', 'W', '3029']
Example Output: 9203WIs5507f95891736I

Example Input: 2, 19, ['9429', 'v', 'j', '5503', 'A', '9927', 'B', '5705', '8891', '5003', '3', 'i', 'Z', 'U', '973', 'P', '957', '7547', '8603', 'e']
Example Output:
30687457759P379UZi3300519885075B7299A3055jv