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, 4, ['4047', 'S', '4249', '1735', '207']

SOLUTION: 53719424S

PROBLEM: 5, 9, ['g', 'B', '7695', 'X', 'h', 'A', '693', 'x', 'Q', 'l', 'Q', '9223', 'y', 'a', 'q']

SOLUTION: Qx396Ah

PROBLEM: 3, 11, ['u', 'W', 'h', 'K', 'A', '7371', 'C', '6805', 'N', 'I', '9827', 'p', '2315', 'H', 'F', '3651', 's', 'T', '9613']

SOLUTION:
7289IN5086C1737AKh