<s>[INST] A projective line $\ell$ is given which is known to contain points $A, B, C, D, E, F$. The points may not be distinct, and there may be other points on $\ell$ as well, but no three points are collinear. Let $S$ be the set of all points on $\ell$. What is the minimum number of points in $S$?[/INST]