The following diagram shows that 250 \(\not \Rightarrow\) 342-n 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 \( \not \Rightarrow \) 342-n is not just a code 6 non-implication, but is also a code 4 non-implication.
| 322 | \( \not \Rightarrow \) | 342-n | This form is negation transferable | |
| \( \Downarrow \) | ||||
| 324 | ||||
| \( \Downarrow \) | ||||
| 327 | ||||
| \( \Downarrow \) | ||||
| This form is transferable | 250 | |||
| \( \Downarrow \) | ||||
| 80 | ||||
| \( \Downarrow \) | ||||
| 18 |