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.

[Q]: 4, 7, ['H', 'I', 'B', '6833', 'a', '7477', '8817', 'd', '4545', '779', 'F', '3265', '1819', '9317', '879']
[A]: 88177477a6833


[Q]: 12, 13, ['I', 'y', 'w', 'a', 'Q', 'f', '2619', 'q', 'e', '8477', 'm', 'C', '203', 'C', '7237', 'h', 'C', 'M']
[A]: 203C


[Q]: 12, 20, ['R', '3903', 'A', 'T', 'M', 'r', 'j', 'K', '7633', 'i', '487', '9923', 'I', 'j', '5757', '5581', '5005', 'J', '4339', 'R', 'H', 'h', 'o', '5607', 'x']
[A]:
R4339J500555815757jI9923