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, 10, ['X', '3687', 'p', '973', '7395', 'T', '9981', 'J', '261', 'V', '8571', 'I', '7911', 'F', 'K', 'J', 'T', 'F', '2249', '2975', 'D', '6279', '1529', '2957', 'y', '5285', 'X', 'v', '8115']
Example Output: V162J1899T5937379p7863X

Example Input: 3, 3, ['x', 'v', 'p', '4337', '635', '8927', 'B']
Example Output: p

Example Input: 18, 22, ['1839', 'E', '5725', '7939', '4907', '6629', '5435', '4247', '5867', '7835', '993', '8027', '787', 'k', 'L', '3597', '4635', 'g', '6589', '4225', 'H', 'F', '3253', '69', 'F', 'Z', 'X', 'E']
Example Output:
FH52249856g