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:
1, 3, ['b', 'd', '227', '3903', '1863', 'O', 'k', 'i']

Ex Output:
227db


Ex Input:
7, 11, ['2019', 'j', 'B', '1079', '2647', 'I', 'e', '6891', '353', '6495', 'F', '8823', 'U', 'b', '8185', '8305', '2217', '8373', '1951', 'L', '9655', '5247', '8033', 'b']

Ex Output:
F64953536891e


Ex Input:
11, 22, ['K', 'r', '1819', '4067', '2251', '6493', 'L', '195', '1563', 'o', 'U', '3481', 'X', 'P', 'v', '4131', '117', '2721', '6475', 't', 'Y', '6607', '9535', 'l', '5385']

Ex Output:

6607Yt647527211174131vPX3481U