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:
6, 19, ['5701', '5045', '6443', 'N', 'm', '3577', 'B', 'X', 'F', '7309', '3013', 'q', '8183', 'S', '3781', 'g', 'r', 'Z', '8147', 'M', '5275', '851', '7985', '5247', 'J', '5427']

Ex Output:
7418Zrg1873S3818q31039037FXB7753


Ex Input:
2, 17, ['781', '1949', '8017', 'I', 'F', 'k', 's', 'f', '9531', '3769', '8135', 'R', '7643', 'v', '6217', '4085', 'M', '1993']

Ex Output:
M58047126v3467R531896731359fskFI71089491


Ex Input:
12, 15, ['331', '9955', '2695', 'y', 'w', 'p', 'h', 'r', '3411', 'Z', 'd', '1377', '2555', '4161', '3795', '2915', '2163', 'd', '7871', 'g', 'u', '6591', 'V', 'V', '3437', 'i', '267']

Ex Output:

5973161455527731