The following diagram shows that 309 \(\not \Rightarrow\) 106 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 309 \( \not \Rightarrow \) 193 is not just a code 6 non-implication, but is also a code 4 non-implication.

193
\(\Downarrow\)
188
\(\Downarrow\)
106 This form is negation transferable
\(\Downarrow\)
126
\(\Downarrow\)
82
\(\Downarrow\)
83
\(\Downarrow\)
64
\(\Downarrow\)
89 \( \not \Rightarrow \) 390
\( \Downarrow \)
90
\( \Downarrow \)
91
\( \Downarrow \)
This form is transferable 309

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