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: 4, 9, ['2731', '4987', '2927', '8573', 'O', '8349', '9507', 'K', '7307', 'V']

Output: 7037K70599438O3758


Input: Consider Input: 1, 5, ['d', 'p', 'B', 'i', '5865', '4569']

Output: 5685iBpd


Input: Consider Input: 5, 20, ['R', 'Y', '1705', '581', 'c', 'S', '4537', '7259', '1163', '7229', '779', '657', '711', '8217', '4155', '6687', '715', '1257', 'h', 'y', 's', 't']


Output: yh75215177866551471281177569779227361195277354Sc