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, 5, ['Y', 'O', 'Q', 'l', 'E']

Ex Output:
ElQO


Ex Input:
1, 1, ['341', '939']

Ex Output:
143


Ex Input:
1, 8, ['855', '9127', '5873', 'f', 'K', 'N', 'G', 'C', 'Z', 'l']

Ex Output:

CGNKf37857219558


