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, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']

Output: 19277718


Input: Consider Input: 5, 7, ['u', '3017', '4149', 'z', '9231', 'C', '7461', 'e']

Output: 1647C1329


Input: Consider Input: 2, 11, ['7391', '6663', '477', '4991', '1033', 'c', 'X', 's', '2517', 'i', 'M', '8437', 'J']


Output: Mi7152sXc330119947743666