The following diagram shows that 325 \(\not \Rightarrow\) 157 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 18 \( \not \Rightarrow \) 157 is not just a code 6 non-implication, but is also a code 4 non-implication.
| This form is transferable | 325 | \( \not \Rightarrow \) | 157 | This form is negation transferable |
| \( \Downarrow \) | ||||
| 17 | ||||
| \( \Downarrow \) | ||||
| 18 |