Another incrementing problem

Well guys I have another incrementing problem for you...this time it's a little more difficult but still pretty basic.   This problem gives me 6 canditates/bits of code to fill in for a single line and 6 outputs.  In this book I'm supposed to match the bit of code to one of the outputs.  

Canditates:               Correct Outputs:
x = x + 3;                      54 6
x = x + 6;                      60 10
x = x + 2;                      45 6
x++;                             36 6
x--:                               18 6
x = x + 0;                      6 14

Now the Code:
class MixFor5 {
    public static void main(String [] args) {
        int x = 0;
        int y = 30;
        for (int outer = 0; outer < 3; outer++) {
            for (int inner = 4; inner > 1; inner--) {
                x = x + 0; // THE BIT OF CODE YOU REPLACE WITH POSSIBLE CANDIDATES
                y = y - 2;
                if (x == 6) {
                    break;
                }
                x = x + 3;          
            }
            y = y - 2;
        }
        System.out.println(x+ " " + y);  
    }
}

Please just go through the code so that I can understand why the output is what it is.  You don't have to do it through every possible candidate...just pick one you think will help me understand this.  Thanks a lot