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]: 8, 21, ['7449', 'R', '469', 'm', 'A', '817', '9583', '239', 'n', '3597', 'C', '6853', '2745', '3827', '5775', 'x', '3875', '7503', '8903', '9679', '819']
[A]: 8199679890375033875x5775382727456853C3597n239


[Q]: 7, 16, ['J', '8449', '9507', '6729', '1979', 'm', 'W', '8217', 'E', 'r', 'J', '7923', 'n', 'A', 'M', '6715', 'F', 'b', 'I', '1375', '6587', 'h', '3101', 'N']
[A]: 6715MAn7923JrE8217W


[Q]: 1, 6, ['M', 'K', '1673', 'S', 'P', '5611', 'd', '6561', '5443', 'o', 'o', 'I', 'v', '7503', '9773', 'O', 'i', '3175']
[A]:
5611PS1673KM