The following diagram shows that 92 \(\not \Rightarrow\) 257 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 170 \( \not \Rightarrow \) 257 is not just a code 6 non-implication, but is also a code 4 non-implication.

257 This form is negation transferable
\(\Downarrow\)
260
\(\Downarrow\)
40
\(\Downarrow\)
43
\(\Downarrow\)
67 \( \not \Rightarrow \) 154
\( \Downarrow \)
89
\( \Downarrow \)
90
\( \Downarrow \)
51
\( \Downarrow \)
337
\( \Downarrow \)
This form is transferable 92
\( \Downarrow \)
170

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