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, 19, ['j', '7679', '6729', '319', '9397', '3963', '5687', '5555', 'L', 'P', '1429', '1885', '1489', '4641', '6755', 'f', 'E', '8993', '1735', '5147', 'g', 'q', '4773', 'y', 'k', '3599', 'S']

Ex Output:
17358993Ef67554641148918851429PL555556873963939731967297679


Ex Input:
4, 10, ['8271', '4307', '8053', '1105', '5247', '3183', '7629', '9177', 'b', 'c', 'b', '5657', 'U', 't', 'p', 'A', 'x', '3377', 'F', 'd', '3535', '6983', '5137']

Ex Output:
cb91777629318352471105


Ex Input:
7, 19, ['V', '9521', '2733', 'f', 'O', '3125', 'L', '7385', 'D', '6601', '2695', '1297', 'b', 'H', '3809', 'a', 'G', '9531', 'h', 'y', 'o', 'h', '5313', 'M']

Ex Output:

h9531Ga3809Hb129726956601D7385L