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, 7, ['P', 'h', '1443', 'b', 'K', '2641', '3831']

Output: 13831462Kb3441hP


Input: Consider Input: 1, 3, ['F', 'R', 'v', 'X', '7135', 'V', '8597', '5153', 'T', '4513', 'B', '7089', 'Q', '3621', 'o', 'W', '4555', '9307', '9997', 'I', '1029', 'c', '363', 'G']

Output: vRF


Input: Consider Input: 2, 4, ['1253', '4265', '929', '6895', 'q', 'E', '6905', 'x', '1871', '7631', 'J', '3865']


Output: 59869295624