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, 5, ['l', 'E', '729', 'U', 'z', '9729', '3247']
Example Output: zU927E

Example Input: 1, 2, ['3303', '6127']
Example Output: 72163033

Example Input: 3, 7, ['u', '8131', 'e', '1077', 'p', 'H', '3259', 'P']
Example Output:
9523Hp7701e