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, ['Y', 'k', 'P', '1517', 'z', '8727', 'U']

Ex Output:
PkY


Ex Input:
11, 13, ['1135', '5903', '4201', 'O', '2679', 'S', '5667', 'F', 'I', '1329', 'p', 'D', '9979', '2665', '1743']

Ex Output:
9979Dp


Ex Input:
1, 2, ['109', 'c', 'r', 'N', 'c', 'a', 'M', '873', '2957', 'o']

Ex Output:

c109