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, ['Y', 'O', 'Q', 'l', 'E']
Example Output: ElQO

Example Input: 3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']
Example Output: 19277718

Example Input: 9, 23, ['R', '777', 'k', 'S', 'j', 'F', '1701', 'h', 'e', '1151', 'U', '2721', '4775', 'G', 's', 'w', 'm', '813', 'o', 'l', '5071', 'Y', '1197', '1819', 'n', 'u', '569', '9587']
Example Output:
7911Y1705lo318mwsG57741272U1511e