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: 18, 22, ['I', '4687', 'V', 'y', 'U', '2255', '6971', '793', 'W', 'O', '3233', '5061', '6355', 'X', 'U', '8435', 'e', 'z', 'u', '6055', 'd', '1493', 'e', '4453', 'X']

Output: 3941d5506uz


Input: Consider Input: 16, 17, ['E', '3657', 'O', 'B', 'V', '3761', 'v', '563', '1623', 'J', '5961', 'h', '5241', '9983', '3325', '1513', 'R']

Output: R3151


Input: Consider Input: 8, 21, ['y', '2341', 'A', 'n', 'w', 't', '6651', 'g', '5793', '6753', 'b', '8927', '8973', 'X', '7157', 'W', 'g', '9191', '7279', '9023', '4133', '8869', 'L', '1005', '3311', 'o', '7721', 'k', '4519']


Output: 3314320997271919gW7517X37987298b35763975g