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: 1, 2, ['S', '7763']

Output: 3677S


Input: Consider Input: 1, 3, ['8015', 'y', 'r', '8077', 'U']

Output: ry5108


Input: Consider Input: 4, 5, ['71', '5609', '2339', '2061', 'L', 'r', 'b', '1139', '9477', 'H', 'D', '217', '3347', 'H', '8463', '5755', '8337']


Output: L1602