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: 2, 7, ['9969', 'u', '9811', 't', 'z', '8347', 'i', 'O', '5897']

Output: i7438zt1189u


Input: Consider Input: 1, 3, ['4101', '9767', 'q', 'Z', '6853', '3643']

Output: q76791014


Input: Consider Input: 5, 11, ['3017', '1055', 'k', 'W', '1771', 'T', '561', 'j', '4063', '8523', 'z', '2039', '3363', 'A']


Output: z32583604j165T1771