The following diagram shows that 313 \(\not \Rightarrow\) 1 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 223 \( \not \Rightarrow \) 1 is not just a code 6 non-implication, but is also a code 4 non-implication.

1 This form is negation transferable
\(\Downarrow\)
This form is transferable 313 \( \not \Rightarrow \) 163
\( \Downarrow \)
222
\( \Downarrow \)
223

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