The following diagram shows that 31 \(\not \Rightarrow\) 133 is a code 6 non-implication, and the theory of transferability then shows that it is actually a code 4. It follows that the non-implication 423 \( \not \Rightarrow \) 133 is not just a code 6 non-implication, but is also a code 4 non-implication.

133 This form is negation transferable
\(\Downarrow\)
90
\(\Downarrow\)
51
\(\Downarrow\)
77
\(\Downarrow\)
185
\(\Downarrow\)
23 \( \not \Rightarrow \) 84
\( \Downarrow \)
27
\( \Downarrow \)
This form is transferable 31
\( \Downarrow \)
32
\( \Downarrow \)
10
\( \Downarrow \)
423

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