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, 10, ['6935', '8323', '6167', 'I', 'G', 'f', '303', '3387', '3257', '3069', 'q', 'r', '187', 'k', '6031', '8221', '721']

Output: 960375237833303fGI


Input: Consider Input: 2, 6, ['6717', '6639', 'l', 'i', 'o', '1819']

Output: 9181oil9366


Input: Consider Input: 11, 12, ['Q', 'u', '2827', '5359', 'H', 'g', 'E', 'G', 'Y', '4245', 'b', 'z', 'I', '6161', '3163', 'M', 'K', '7619', 'i', '7493', '1437', 'c', 'y', '7959', '3885']


Output: zb