UPSC CDS English Ordering of Sentences Part 2 Questions

SI : Once upon a time there was a king who had a wonderfully nice garden.
S6: In the trees lived a nightingale that sang so sweetly that all who passed by stood still and listened.
P : In the middle of the garden there was a lovely forest with tall trees and deep lakes.
Q : In this garden were to be seen the most wonderful flowers with silver bells tied to them.
R : The garden was so large that even the gardener himself did not know where it began and where it ended.
S : These bells always sounded so that nobody should pass by without noticing the flowers.
The proper sequence should be