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, 7, ['1247', 's', 'J', 'w', 'X', '7211', 'c']

Output: c1127Xw


Input: Consider Input: 2, 9, ['g', '309', 'x', '3537', '5995', 'K', '6951', 'x', 'b', '3171', '9079', '7597']

Output: bx1596K59957353x903


Input: Consider Input: 5, 7, ['2289', 'w', '9967', '9461', 'i', '7929', '9333', 'q', '7837', '2517']


Output: 33399297i