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, ['Q', '6249', 'm', 'H', 'x', 'b', 'Z', 'z', '15']

Output: 9426Q


Input: Consider Input: 10, 19, ['6733', 'q', '2197', 'h', '9975', '3059', 'e', '8475', '281', 'L', '9119', 'B', '8857', 'U', 'R', 'h', 'e', 'J', 'P', 'l']

Output: PJehRU7588B9119L


Input: Consider Input: 15, 18, ['8311', '9791', 'U', 's', 'U', 'd', '1057', 'v', 'R', 'N', '9469', 'G', 'l', '7209', 'N', 'z', '2139', '7857', 'G', 'z', 'X', '9879', '4113']


Output: 75879312zN