 (A0) edge \[-, shorten &lt;= 0pt, shorten &gt;= 0pt\] node\[above\] [ ]{} (B0); (A0) edge \[-, shorten &lt;= 0pt, shorten &gt;= 0pt\] node\[above\] [ ]{} (C0); (A0) edge \[-, shorten &lt;= 0pt, shorten &gt;= 0pt\] node\[above\] [ ]{} (D0); (B0) edge \[-, shorten &lt;= 0pt, shorten &gt;= 0pt\] node\[above \][ ]{} (E0); (