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: 2, 3, ['i', '7465', '1315']

Output: 51315647


Input: Consider Input: 1, 2, ['e', 'F']

Output: Fe


Input: Consider Input: 1, 6, ['U', '1023', '3127', '4113', '8297', '4647', '7055', '7785', '8561', '551', 'E', 'e', '6365', '4547', '135', 'A', '105', 'R', '7821', '2459', '5893', 'P']


Output: 74647928311472133201U