The following diagram shows that 79 \(\not \Rightarrow\) 346 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 142 \( \not \Rightarrow \) 346 is not just a code 6 non-implication, but is also a code 4 non-implication.

346 This form is negation transferable
\(\Downarrow\)
126
\(\Downarrow\)
82
\(\Downarrow\)
83
\(\Downarrow\)
64
\(\Downarrow\)
89 \( \not \Rightarrow \) 390
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90
\( \Downarrow \)
91
\( \Downarrow \)
This form is transferable 79
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70
\( \Downarrow \)
142

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