The following diagram shows that 88 \(\not \Rightarrow\) 392 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 268 \( \not \Rightarrow \) 392 is not just a code 6 non-implication, but is also a code 4 non-implication.

392 This form is negation transferable
\(\Downarrow\)
393
\(\Downarrow\)
121
\(\Downarrow\)
122
\(\Downarrow\)
333 \( \not \Rightarrow \) 250
\( \Downarrow \)
This form is transferable 88
\( \Downarrow \)
268

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