4 6 7 | 4 6 7 | 4 6 7 s3 s2 | 7 8 7 5 3 | 2 3 5 3
4 6 7 | 4 6 7 | 4 6 7 s3 s2 | 7 8 s3 8 5 | s3 8 c5 5
4 5 6 | 5 6 7 | 8 7 3
s2 s3 s3 | s3 s4 s5 | s4 s5 s6
4 5 6 | 5 6 7 | 8 7 3
s2 s1 | s3 s2 |...