The following diagram shows that 31 \(\not \Rightarrow\) 152 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 389 \( \not \Rightarrow \) 152 is not just a code 6 non-implication, but is also a code 4 non-implication.

152 This form is negation transferable
\(\Downarrow\)
4
\(\Downarrow\)
9
\(\Downarrow\)
17
\(\Downarrow\)
23 \( \not \Rightarrow \) 124
\( \Downarrow \)
27
\( \Downarrow \)
This form is transferable 31
\( \Downarrow \)
32
\( \Downarrow \)
10
\( \Downarrow \)
80
\( \Downarrow \)
389

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