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.

Ex Input:
5, 7, ['2695', 'K', 'B', 'h', 'V', '6435', 'Q', '2881', '7385', '8941']

Ex Output:
Q5346V


Ex Input:
7, 9, ['s', '3175', '1431', 'a', 'u', '7265', 'N', 'H', '1217', 'x', 'u', 'a', 'c', 'n', 'b', 'J', 'B', '6907', 'D', '6691', 'N', '7959', 'm']

Ex Output:
7121HN


Ex Input:
7, 11, ['P', '2655', '3053', 'S', '1409', 'k', 'd', 'D', 'y', 'Q', 'm', 's', 'C', '7659', 'r', '8349', 'y', '3441', '107', 'W', '7445', '1663', 'T', 'Z']

Ex Output:

mQyDd