  We show how to construct, via forcing, splitting families than are preserved
by a certain type of finite support iterations. As an application, we construct
a model where 15 classical characteristics of the continuum are pairwise
different, concretely: the 10 (non-dependent) entries in Cicho\'n's diagram,
$\mathfrak{m}(2\text{-Knaster})$, $\mathfrak{p}$, $\mathfrak{h}$, the splitting
number $\mathfrak{s}$ and the reaping number $\mathfrak{r}$.
