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:
7, 9, ['4311', 'Q', 'j', '3613', '9671', 'u', 'y', '3321', '2069', '4299', 'W', 'c', '627', '1327', '9747', 'Q', 'k', '9587', '5911']

Ex Output:
96021233y


Ex Input:
5, 9, ['V', 'G', '4689', 'I', '6573', 'v', '4999', 'V', 'H', 'U', '2383', '489', '8517', 'K', 'A']

Ex Output:
HV9994v3756


Ex Input:
7, 22, ['o', 'X', '8103', 'b', '9159', '7663', 'T', 'g', 'N', '7759', 'X', 'H', '197', '6781', 'B', '733', 's', 'l', 'Z', 'N', '6227', '6463', 'A', '8391']

Ex Output:

36467226NZls337B1876791HX9577NgT


