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: 3, 4, ['E', 'k', '4697', 'f', 'J', 's', '1265', '4673', 'D', '3345', 'n', '5593', '2249', '5951']
Example Output: f7964

Example Input: 2, 5, ['1769', '8475', '6093', '8939', 'V', '2263', '8825', '3527', '4195', 'A', '7999', '7841', '4967', '1829']
Example Output: V939839065748

Example Input: 2, 7, ['Q', '5067', 'a', '3805', '9039', '2931', 'w', '2193', '2061', '4611', '9723', '8745', 'n', 't', 'W', 'y', '8933', 'X', '6861', 'g', 'X', 'p', 'G']
Example Output:
w139293095083a7605