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, 9, ['Y', '9075', '2327', '1643', '655', '935', 'a', 'j', 'm']
Example Output: mja53955634617232

Example Input: 18, 22, ['I', '4687', 'V', 'y', 'U', '2255', '6971', '793', 'W', 'O', '3233', '5061', '6355', 'X', 'U', '8435', 'e', 'z', 'u', '6055', 'd', '1493', 'e', '4453', 'X']
Example Output: 3941d5506uz

Example Input: 6, 18, ['n', 'a', 'I', 'N', 'x', '9047', '8069', 'u', 'l', '1659', 'Y', 'M', 'A', 'Z', 'H', '3663', '2719', 'L', '5083', '9907', '4037', '5973']
Example Output:
L91723663HZAMY9561lu96087409