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: 4, 12, ['S', '1783', 'd', '3489', '2291', '4757', 'b', '5761', 'Y', 'M', '6453', '2477', 'B', 'm', '6749', 'S', '3291', 'L', '8725', '8637', 'l', '1747']

Output: 77423546MY1675b757419229843


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, 20, ['9151', '8165', 'i', '5599', 'l', '4485', '2081', '8811', 'Q', 'X', '517', 'a', '6313', '5547', 'Z', 'Q', 'e', '4705', '3755', '7147']


Output: 741755735074eQZ74553136a715XQ118818025844