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:
2, 7, ['j', '7173', 'D', '6745', '9469', '3259', '5885', '9507', 'U', '8735', 'C', 'O', '2055', 'm', '2265', '9445', '6445']

Ex Output:
5885325994696745D7173


Ex Input:
6, 6, ['8655', 'L', 'F', 'l', '5817', '437', '8469']

Ex Output:
437


Ex Input:
4, 11, ['4961', '3369', 'P', 'a', '6917', 'g', '4163', '7113', '3561', '2933', 'S', '9945', '6625', '2323', 'h', 'r', 'x', 'N']

Ex Output:

S2933356171134163g6917a