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:
6, 7, ['S', 'R', 'k', 'b', 'd', '9773', '6751']

Ex Output:
67519773


Ex Input:
13, 20, ['q', 't', 'r', '4927', 'K', '8361', '8057', 'j', '6415', '7971', 'n', '4535', 'o', 'k', '9361', '1671', '6953', 'D', 'i', 'C', 'm', '9783', 'y', '3179', '903', 'P', 'V', '4701', 'z', '2819']

Ex Output:
CiD695316719361ko


Ex Input:
10, 10, ['9747', 'U', 'a', 'B', 'F', 'a', 'p', '6845', '1757', '2885', '6519', 'x', 'h', 'O', '4997', 'Q', '8719', 'F', 'x', '1783', 'H', 'Y', '8873', 'P', 'z']

Ex Output:

2885