Example 3

				$\cred\ff$
		$\cred 1$		$\cred 2$		$\cred 3$
	$\cred 1$	$1$		$\cred 8$		$3$
$\cred\ll$	$\cred 2$	$3$		$1$		$\cred 8$
	$\cred 3$	$\cred 8$		$3$		$1$
	$\cred 4$	$7$		$7$		$7$

Beyond non-negativity there are 12 dual constraints.

• The primal constraint on worker 4 is not binding, so $\scr w_{\tn 4}=0$.
• $\scr w_{\tn 4}+\pi_{\tn i}\geq\scr 7$, so all $\scr \pi_{\tn i}\geq 7$.
• $\scr \pi_{\tn i+1}=8-w_{\tn i}$ ($\scr i\mod 4$)
• so $\scr 0\leq w_{\tn i}\leq 1$ for $\scr i\leq 3$.