$$
\mathrm{first\ line} \\
\mathrm{second\ line} \\
\mathrm{third\ line}
$$

$$
\mathscr{first\ line} \\
\mathscr{second\ line} \\
\mathscr{third\ line}
$$

$$
\mathfrak{first\ line} \\
\mathfrak{second\ line} \\
\mathfrak{third\ line}
$$

$$
\mathcal{first\ line} \\
\mathcal{second\ line} \\
\mathcal{third\ line}
$$
