The following diagram shows that 92 \(\not \Rightarrow\) 391 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 92 \( \not \Rightarrow \) 391 is not just a code 6 non-implication, but is also a code 4 non-implication.
| 391 | This form is negation transferable | |||
| \(\Downarrow\) | ||||
| 399 | ||||
| \(\Downarrow\) | ||||
| 323 | ||||
| \(\Downarrow\) | ||||
| 62 | ||||
| \(\Downarrow\) | ||||
| 61 | ||||
| \(\Downarrow\) | ||||
| 11 | ||||
| \(\Downarrow\) | ||||
| 12 | ||||
| \(\Downarrow\) | ||||
| 336-n | ||||
| \(\Downarrow\) | ||||
| 64 | ||||
| \(\Downarrow\) | ||||
| 337 | \( \not \Rightarrow \) | 127 | ||
| \( \Downarrow \) | ||||
| This form is transferable | 92 |