TASK DEFINITION: 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.
PROBLEM: 2, 2, ['w', '5569', '6229', 'b']

SOLUTION: 9655

PROBLEM: 2, 3, ['4541', 'B', '9655', '8453', 'r', 'i', 'P']

SOLUTION: 5569B

PROBLEM: 7, 11, ['3911', 'j', 'Y', 'H', 'A', 'Y', '3725', 'x', 'Q', 'l', 'L', '8189', '9419', '3879', 'I', 'U', 'U', '6789', 'G', '2957', 's', 'm', 'a', 'b']

SOLUTION:
LlQx5273