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: 3, 9, ['R', 'r', '7889', '4141', '1281', 'x', '9299', '4803', 'k', '2433']

Output: k30849929x182114149887


Input: Consider Input: 1, 4, ['j', '2349', 'V', '4879', '8473', 'X', 'C', '2769', 's', '6297', '7723', '6009', 'I', '6385', '9161', '9179', '9785', '4965', '4479', '7323', '4685', '1891']

Output: 9784V9432j


Input: Consider Input: 6, 7, ['O', '2311', 'S', 'Q', '5269', '5325', '6075', '267', 'f', '5301', '2267', 'D', 'z', 'B', '1437', '9633', 'A', '7645', '135', '1227', '6613', '4681', 's', 'J', 'i', '4833', '6883', 'j']


Output: 57065235