The following diagram shows that 82 \(\not \Rightarrow\) 393 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 387 \( \not \Rightarrow \) 393 is not just a code 6 non-implication, but is also a code 4 non-implication.
| 393 | This form is negation transferable | |||
| \(\Downarrow\) | ||||
| 165 | ||||
| \(\Downarrow\) | ||||
| 67 | \( \not \Rightarrow \) | 324 | ||
| \( \Downarrow \) | ||||
| 126 | ||||
| \( \Downarrow \) | ||||
| This form is transferable | 82 | |||
| \( \Downarrow \) | ||||
| 387 |