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: 2, 2, ['6099', 'r']
Example Output: r

Example Input: 4, 8, ['g', '6711', '6701', 'p', '6345', 'W', '9953', '3185', 'W']
Example Output: 58133599W5436p

Example Input: 2, 5, ['p', '8817', 'l', 'f', '3635', 'V', 'G', '657', '1085', '4745', 's', 'x', '8673', 'p', '8509', '3059', 'I', '5031', '2677', '919', '6543', '5507', '9325', '8649', 'v', '4909']
Example Output:
5363fl7188