My reduced row echelon form of my augmented matrix turned out to be

1 0 0 | 0 0 0
0 1 0 | 0 1 1
0 0 1 | 0 2 3
0 0 0 | 1 3 1
0 0 0 | 0 0 0

In this case, is my transition matrix;

0 0 0
0 1 1
0 2 3

or

0 0
1 1
2 3
3 1

?

Thanks