Exercise : while loop mystery practice-it

Fill in the boxes at right with the output produced by each method call. 

public static void mystery3(int x) {
    int y = 0;
    while (x % 2 == 0) {
        y++;
        x = x / 2;
    }
    System.out.println(x + " " + y);
}
mystery3(19); 
19 0
mystery3(42); 
21 1
mystery3(48); 
3 4
mystery3(40); 
5 3
mystery3(64); 
1 6