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: 18, 28, ['s', '1667', '5009', 'J', '7901', '7217', '861', '1367', '8325', 'Q', 'W', '8777', '4693', 'I', '1603', '3901', '6355', '9557', '1293', 'e', '3', '8845', 'j', 'w', 'D', '3687', 'y', '2769']

2769y3687Dwj88453e12939557