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.

Ex Input:
3, 9, ['I', 'L', 'k', '543', 'R', 'D', 'B', '9659', '7595', 'O', '8599', 'p', 'x', '7577', '2979', '8467', 'w', 'Q', '8385', '133', '675', '7447', 'l', 'J', '7157']

Ex Output:
75959659BDR543k


Ex Input:
7, 15, ['8887', '757', '2347', 'M', 'K', 'T', '3265', '5567', 'Y', 'd', 'J', 'N', 'i', 'm', '4703', '8855', '4005', 'U', '1865', '4037', '339', 'v', '6393', '1763', '6435', 'F', 'l', '1075', '525', 'R']

Ex Output:
4703miNJdY55673265


Ex Input:
3, 7, ['973', '4113', '517', '6021', '6051', 'H', '3763', 'S', '6425', 'G', '5913', 'U', '1421']

Ex Output:

3763H60516021517