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: 1, 2, ['e', 'F']

SOLUTION: Fe

PROBLEM: 3, 6, ['6843', '7805', 'h', '9097', 'O', 'u']

SOLUTION: uO7909h

PROBLEM: 12, 13, ['G', '9567', '3667', '2203', 'T', 'C', 'D', 'A', 'n', 'a', '7217', '3011', '1735', 'S', '461', 'y', '8583', 'I', '9125']

SOLUTION:
53711103