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.

Input: Consider Input: 3, 3, ['H', '7843', '2823', '529']

Output: 3282


Input: Consider Input: 2, 12, ['f', '1687', '819', 'N', 'w', '6089', '6725', 'p', '8625', '5327', 'r', '8103', 'd', '1441', 'v', 'k', '3407', '5891', 'X', '6419', 'e']

Output: 3018r72355268p52769806wN9187861


Input: Consider Input: 12, 20, ['1755', '2161', '2347', '1529', '9567', 'K', 'M', 'M', 's', '1035', '7301', '5411', 'o', '8503', '6987', 'z', 'T', 'd', '2465', '7299', 'c', '5219', '8297']


Output: 99275642dTz78963058o1145