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.

Ex Input:
2, 11, ['6519', 'l', '6577', 'z', '4271', 'R', 'O', '7809', 'K', 'V', '4531']

Ex Output:
1354VK9087OR1724z7756l


Ex Input:
6, 8, ['4263', '4799', 'D', '4627', 'P', 'z', '8589', '5107', 'T', 'R', 'L', 'G', 'd']

Ex Output:
70159858z


Ex Input:
18, 24, ['2191', '7971', '2883', '2215', 'C', '8347', 'E', 'K', '1295', '5481', 'N', '4083', 'P', '675', '4199', 'H', '8439', '4847', '7969', 'U', '7999', 'o', '1743', 'E']

Ex Output:

E3471o9997U96977484