数学模型	掩膜图像	数学模型	掩膜图像	数学模型	掩膜图像
$\mod (m + n, 2)$		$\mod (m + n, 3) = 0$		$\mod (n, 2) - 1 = 0$
$\mod (\frac{m}{2} + \frac{n}{2} + 1, 3) = 0$		$\mod (\frac{m}{2} + \frac{n}{3}, 2) = 0$		$\mod (m \times \frac{n}{2}, 3) = 0$
$\begin{array}{l} \mod (m \times n, 2) \\ + \mod (m \times n, 3) = 0 \end{array}$		$\begin{array}{l} \mod ((\mod (m \times n, 2) \\ + \mod (m \times n, 3)), 2) = 0 \end{array}$		$\mod (m \times \frac{n}{4} - 1, 3) = 0$