The following diagram shows that 9 \(\not \Rightarrow\) 218 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 57 \( \not \Rightarrow \) 218 is not just a code 6 non-implication, but is also a code 4 non-implication.
| 218 | This form is negation transferable | |||
| \(\Downarrow\) | ||||
| 61 | ||||
| \(\Downarrow\) | ||||
| 3 | \( \not \Rightarrow \) | 88 | ||
| \( \Downarrow \) | ||||
| This form is transferable | 9 | |||
| \( \Downarrow \) | ||||
| 57 |