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.

4, 20, ['H', '7451', 'X', 'i', '951', '1913', '9949', 'W', '4759', '1309', '1981', 'C', 'J', 'F', '4125', 'l', 'i', 'z', 'S', 'R', '5025', '5959', '1323', 'K', 'O', 'x', '5121', 'c', 'C']
RSzil5214FJC189190319574W94993191159i

10, 11, ['i', 'w', 'V', '2695', 'I', 'q', 'o', 'X', 'u', 's', 'e', 'f', '7693', 'q', '5845', 'e', '4161', '3059', 'F', '6863', '985', 'D', '3643', '383', 'A', '7515', '4335']
es

1, 1, ['B', 'H']

B