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, 3, ['2923', 'F', '4033', 'V']

SOLUTION: 3304F

PROBLEM: 10, 14, ['8619', '1037', '6899', '8381', 's', '6757', 'a', '7261', '951', '3047', 'r', 'W', 'O', '31', '2943', '2351', '7637', '8501', 'K', '9131', '599', 'G', 'k', 'a', '8299', 'S', 'G']

SOLUTION: 13OWr7403

PROBLEM: 4, 12, ['5891', '5581', 'U', 'B', '5063', '8927', '1091', 'O', 'q', '2883', 'E', 'k', '6837', '2345', 'I', 'J', '8837', '1105', '6067', '6223', 'U', '5349', '9981']

SOLUTION:
kE3882qO190172983605B