In this word meld, your task is to change the word "PASSER" into the word "SPARSE." However, for this problem, each step consists of switching the position of any two adjacent letters (without regard, obviously, for whether they form a word or not).
P A S S E R . . . . . . . . . . . . . . . . . . . . . . . . S P A R S E
How can you do this in five moves?
(Not less than five)