From St. Robert C.H.S., University of Waterloo
About
$$\displaystyle
\require{enclose}
\def\uline#1#2{\enclose{updiagonalstrike}{\phantom{\Rule{#1em}{#2em}{0em}}}}
\def\dline#1#2{\enclose{downdiagonalstrike}{\phantom{\Rule{#1em}{#2em}{0em}}}}
%
\def\place#1#2#3{\smash{\rlap{\hskip{#1em}\raise{#2em}{#3}}}}
%
\hskip 1em
%
\place{0}{12.2}{\bullet}
\place{2}{0}{\bullet}
\place{4.1}{4}{\bullet}
\place{6.1}{0}{\bullet}
\place{8.1}{8}{\bullet}
\place{10.1}{0}{\bullet}
\place{12.1}{4}{\bullet}
\place{14.1}{0}{\bullet}
\place{16.1}{12}{\bullet}
%
\place{.3}{4.4}{\dline{3.6}{7.6}}
\place{2.3}{.5}{\uline{1.6}{3.6}}
\place{4.3}{.4}{\dline{1.6}{3.6}}
\place{4.3}{4.4}{\uline{3.6}{3.7}}
\place{8.3}{4.4}{\dline{3.6}{3.6}}
\place{10.3}{.5}{\uline{1.6}{3.6}}
\place{12.3}{.4}{\dline{1.6}{3.6}}
\place{12.2}{4.4}{\uline{3.7}{7.6}}
\hskip18em\Rule{0em}{14em}{1.5em}
$$