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:
1, 9, ['3207', 'E', 'h', 'h', 'I', '4019', 'v', 'O', 'r', 'Q', '9685', 'I', '8665', '7037', '5181', 'v', 'W', 'a', 'p', '2959', 'f', 'H', '3121']

Ex Output:
rOv9104IhhE7023


Ex Input:
5, 7, ['N', 'U', 'L', '1205', '7327', 'b', 'c']

Ex Output:
cb7237


Ex Input:
8, 13, ['q', '2477', '237', '1797', '9765', 'n', 'Y', 'F', '6355', 'N', '5041', '2759', 'I', 'B', 'C']

Ex Output:

I95721405N5536F