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: 5, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']

SOLUTION: dT

PROBLEM: 13, 15, ['L', 'A', '2959', 'g', '7157', '9131', 'o', 'D', 'q', 'd', 'A', '4249', 'K', 'U', '4805', 'h', '7981']

SOLUTION: 5084UK

PROBLEM: 14, 14, ['8037', '299', '9133', '9067', '6425', '2813', 'J', 'i', 'b', '6713', 'x', '1637', 'u', 'N', 'S']

SOLUTION:
N