[7823]\left[\begin{array}{ll}7 & 8 \\2 & 3\end{array}\right][7283]
[81045]\left[\begin{array}{cc}8 & 10 \\4 & 5\end{array}\right][84105]
[6565]\left[\begin{array}{ll}6 & 5 \\6 & 5\end{array}\right][6655]
[41628]\left[\begin{array}{ll}4 & 16 \\2 & 8\end{array}\right][42168]