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: 3, 12, ['2159', 'f', 'u', '2675', '7357', '9325', '1275', '8897', 'I', '2095', '5835', '577', 'g', '2783', '7843', '8517', '4185', '5847', '2645', '2357', 'l', 'v', '2239', '141', 'o', '2529', '7977', '8445', '2363']

Output: 77553855902I79885721523975375762u


Input: Consider Input: 7, 17, ['P', '9275', '2025', '6709', 'd', 'j', '745', 'F', 'd', 'T', 'w', 'E', '2915', 'g', 'E', 'r', '8951']

Output: 1598rEg5192EwTdF547


Input: Consider Input: 6, 20, ['e', '3411', 'h', '1475', '553', 't', 'U', '3115', '8237', 'f', '6501', '873', '6543', '9799', 'U', '365', '4757', '7775', 'H', '2831', 'w', 'u', 'f']


Output: 1382H57777574563U997934563781056f73285113Ut