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.

Input: Consider Input: 5, 7, ['Y', '5101', 'B', '5129', 'a', 'y', 'v', '4577', '5455', '6685', '6435']

Output: vya


Input: Consider Input: 5, 5, ['6131', '6209', 'H', 'g', '4529', '491', '2143', '6281']

Output: 9254


Input: Consider Input: 1, 9, ['Y', 'p', 'p', 'd', '951', '9331', 'W', 'x', 'b', '9671', 'v', 'B']


Output: bxW1339159dppY