The following diagram shows that 82 \(\not \Rightarrow\) 398 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 390 \( \not \Rightarrow \) 398 is not just a code 6 non-implication, but is also a code 4 non-implication.

398 This form is negation transferable
\(\Downarrow\)
322
\(\Downarrow\)
324
\(\Downarrow\)
327
\(\Downarrow\)
250
\(\Downarrow\)
67 \( \not \Rightarrow \) 80
\( \Downarrow \)
126
\( \Downarrow \)
This form is transferable 82
\( \Downarrow \)
83
\( \Downarrow \)
64
\( \Downarrow \)
390

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