The following diagram shows that 79 \(\not \Rightarrow\) 357 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 74 \( \not \Rightarrow \) 357 is not just a code 6 non-implication, but is also a code 4 non-implication.

91 \( \not \Rightarrow \) 357 This form is negation transferable
\( \Downarrow \)
This form is transferable 79
\( \Downarrow \)
94
\( \Downarrow \)
74

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