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, ['735', 'W', '5879', '8259']

Output: W537


Input: Consider Input: 1, 2, ['k', 'A', '2153']

Output: Ak


Input: Consider Input: 7, 16, ['a', '43', 'i', 'U', '4341', '4959', 'J', 'o', '7903', '8005', '4519', 'g', '1937', 'G', '171', 'w', 'c']


Output: w171G7391g915450083097oJ