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, 5, ['7115', '3109', '3805', '6831', '6897', 'y', 'b']
Example Output: 79861386508390135117

Example Input: 2, 6, ['415', '3603', 'l', 'C', '9471', 'z', '4087', 'Y', 's']
Example Output: z1749Cl3063

Example Input: 1, 14, ['c', '7187', 'l', '5637', '1917', 'Q', '7621', '4561', 'g', '3547', 'X', 'x', '2909', '747', '6579', '2993', '429', 'C', 'T', 'L', '9849']
Example Output:
7479092xX7453g16541267Q71917365l7817c