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: 10, 13, ['D', 'A', '4221', '7301', '1937', 'r', '5105', 'q', 'F', 'j', '9441', '6391', '7081', 'l', '6569', 'i', '8871', '5985']

Output: 180719361449j


Input: Consider Input: 1, 2, ['A', '8103', '7829']

Output: 3018A


Input: Consider Input: 1, 13, ['r', 'L', 'L', '8749', '1297', 'x', 'N', '3575', 'f', '8931', '1131', 'J', '1783', 'i']


Output: 3871J13111398f5753Nx79219478LLr