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, ['u', 'k', 'M', '7101', 'U', 'f', 'L', '653', '2863']

Ex Output:
Mku


Ex Input:
6, 8, ['y', 'g', 'I', '7137', '1589', '6209', '9823', '4543', '8683', 'L', 'H', '1937', 'R', 'c', 'E', 'l', '4221', '7981']

Ex Output:
454398236209


Ex Input:
2, 5, ['w', 'g', '5525', 'L', 'i', 'F', 'l', 'o']

Ex Output:

iL5525g