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.
15, 26, ['6275', 'X', 'K', '9585', 'c', 'c', '1693', '3643', 'A', 'd', '7501', '5041', 'k', 's', '5115', 'a', 'o', '4375', 'j', '1311', '5355', 'a', 'l', '6637', 'v', '7399', '7985', '6713', 'K']