\input{umtest-preamble}
\usepackage{unicode-math}
\setmathfont{FreeSerif}
\begin{document}
\[Ϝϝ\]
\[𝟊𝟋\]
\[\mathup{Ϝϝ}\]
\[\mathbf{Ϝϝ}\]
\end{document}
