Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 2, 12, ['3589', 'h', 'Q', 'I', '117', 'n', '3491', 'h', '6877', 'J', 'p', '1935', 'F', '2781', 'r', '6763', 's', 'N', 'r', '665', '8333']

1935pJ6877h3491n117IQh