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, 8, ['X', 'I', '9323', 'A', 'v', 'd', '7685', 'Z', 'p']

Output: Z5867dvA3239IX


Input: Consider Input: 3, 6, ['A', '6949', '2045', '119', '1373', '9613']

Output: 316937319115402


Input: Consider Input: 1, 20, ['133', '4267', '1963', 'R', '47', '2445', 'O', '759', '8549', '1817', 'l', '2773', '417', 'c', 'G', 'B', '669', 'D', '7313', '7221', '6889']


Output: 12273137D966BGc7143772l71819458957O544274R36917624331