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, 5, ['d', 'p', 'B', 'i', '5865', '4569']

SOLUTION: 5685iBpd

PROBLEM: 10, 11, ['6929', 'l', '8541', 'L', '7495', '7707', '8839', '6687', 'L', '5125', 'd', 'F', '7', '4357', 'w', 'R', '2459', '9871', 'E', '299', '5967', 'T']

SOLUTION: d5215

PROBLEM: 6, 8, ['J', '4901', 'Q', 'e', 'z', 'g', 'N', 'f', '7015', 'x', '7483', 'U', 'z', 'H', '5461', 'x', '1745', '1355', 'P', 'k', 'l', '3597', 'E', '7695', '7179', 'p', 'J', '5383']

SOLUTION:
fNg