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:
8, 19, ['r', '7451', 'X', 'l', 'S', 'v', '4807', '4851', '8849', '3993', 'w', 'Z', '1419', '9185', 'N', '2285', '13', 'm', 'd', 'Y', 'j']

Ex Output:
dm315822N58199141Zw399394881584


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:
3, 23, ['n', '9909', 't', 'u', 'x', '1987', '5191', 'r', '7591', '5361', 't', '5119', '2557', '8519', 'b', '1343', '2793', 'R', 'F', 'e', '3813', 'I', '2145']

Ex Output:

5412I3183eFR39723431b915875529115t16351957r19157891xut