The following diagram shows that 79 \(\not \Rightarrow\) 20 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 371 \( \not \Rightarrow \) 20 is not just a code 6 non-implication, but is also a code 4 non-implication.
| 20 | This form is negation transferable | |||
| \(\Downarrow\) | ||||
| 101 | ||||
| \(\Downarrow\) | ||||
| 40 | ||||
| \(\Downarrow\) | ||||
| 39 | ||||
| \(\Downarrow\) | ||||
| 8 | ||||
| \(\Downarrow\) | ||||
| 67 | \( \not \Rightarrow \) | 342-n | ||
| \( \Downarrow \) | ||||
| 89 | ||||
| \( \Downarrow \) | ||||
| 90 | ||||
| \( \Downarrow \) | ||||
| 91 | ||||
| \( \Downarrow \) | ||||
| This form is transferable | 79 | |||
| \( \Downarrow \) | ||||
| 371 |