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: 1, 5, ['7115', '3109', '3805', '6831', '6897', 'y', 'b']

Output: 79861386508390135117


Input: Consider Input: 4, 12, ['H', 'r', 'n', 'Y', '173', '9285', '3105', '883', 'n', '8915', '6923', 'S', 'T', 'o', '1639', '8421', 'g']

Output: S32965198n38850135829371Y


Input: Consider Input: 4, 7, ['N', '1615', 'C', 'w', 'K', 'd', '5839']


Output: 9385dKw