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, 22, ['5409', 'h', 'u', 'C', 'b', '7979', 'M', '6477', 'k', 'G', '1997', '9033', '2637', 'l', 'y', '8427', '5107', '6743', '5677', '2471', '2225', 'E', 'Q']

Output: E522217427765347670157248yl736233097991Gk7746M9797bC


Input: Consider Input: 4, 7, ['C', 'j', 'F', '495', 'H', '6595', 'h', '7567', 'f']

Output: h5956H594


Input: Consider Input: 1, 3, ['5805', 'U', '9043', 'V']


Output: 3409U5085