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: 27, 28, ['k', '2839', 'e', 'j', 'A', '5649', 'N', '2829', 'u', '6889', '9691', '6695', '9849', '8171', 'a', 'D', '1887', 'Q', 'P', 'H', 'n', '6333', '1491', 'U', '5313', 'A', '699', '665', 'N', 'q']

SOLUTION: 566996

PROBLEM: 13, 14, ['5913', '6823', '5945', 'a', '8191', 's', '5405', 'l', '2515', '3901', 'R', '1575', 'e', 'P', '9231', '39', '6651', 'N']

SOLUTION: Pe

PROBLEM: 1, 25, ['8093', '5411', '1495', '7895', 'Q', '7723', '4061', 'o', '5843', '5639', 'w', '1837', '6075', '8981', 'R', '6743', '2147', 's', 'p', 'H', '7347', 'W', 'n', '4503', 'b', 'l', 'L', '3915', 'M', 'O']

SOLUTION:
b3054nW7437Hps74123476R189857067381w93653485o16043277Q5987594111453908