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, 4, ['3633', 'k', '9685', 't']
Example Output: t5869k3363

Example Input: 1, 4, ['I', '5919', 'J', '6387']
Example Output: 7836J9195I

Example Input: 8, 9, ['s', 'X', '6737', 'M', 'm', 'N', 'a', 'Q', 't']
Example Output:
tQ