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.

Input: Consider Input: 6, 15, ['7969', 'z', '7061', 'J', 'T', '7917', '7225', '7907', '8333', 'U', 'w', 'Y', '4729', '2461', 'X', 'k']

Output: X24614729YwU8333790772257917


Input: Consider Input: 4, 6, ['U', '5099', '1125', 'U', '1693', '7717', 'P', '7679', 'E', '7747', 'D', 'Z', 'E', '4473']

Output: 77171693U


Input: Consider Input: 4, 4, ['C', '6527', '7921', 'A', 'a', 'p', '9977', 'a', 'K', 'f', '7227', '165', '7615', '2449', '955', 'e', 'm', 'k', '4455', '3149', '4079', 'H', '5549', 'S', '2621']


Output: A