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, 2, ['w', '5569', '6229', 'b']

SOLUTION: 9655

PROBLEM: 2, 4, ['o', '5393', 'p', 'h', '5617', 'F', 'I', 'a']

SOLUTION: hp3935

PROBLEM: 14, 26, ['2443', '5471', '6833', '2027', 'I', '1209', '101', '7801', '3251', '8383', 'z', 'M', 'E', 'Y', 'r', 'j', '8317', 'h', 'B', '3989', 'b', 'Z', 'r', '1873', '4285', 'R', 'l', 'K', 'N', '1609']

SOLUTION:
R58243781rZb9893Bh7138jrY