Example: Suppose that you have nailed 1 girl of
rank 1,
2 girls of rank 2, 2 girls of rank 3, 5 girls of rank 4, 3 girls of rank 5 and 4 girls of rank 8. In this case, your
s-index is 5 because you have nailed 5 girls of rank 5 or better and your s-index is not 6 because you have not nailed 6 girls of rank 6 or more.