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, 15, ['o', '7861', '5335', '835', 'e', '8077', 'd', '3099', 'F', 'q', 'C', 'F', 'M', '4715', '2669', 'D', '1517', '4361', 'e', 'v', 'P', '6813', 'q', '9075', '9997', '8799', 'L']

SOLUTION: 96625174MFCqF9903d7708e53853351687o

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: 5, 8, ['1421', 'C', 'I', '5817', 'Y', '8135', 'Z', '3729', '8761']

SOLUTION:
9273Z5318Y