The following diagram shows that 52 \(\not \Rightarrow\) 216 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 287 \( \not \Rightarrow \) 216 is not just a code 6 non-implication, but is also a code 4 non-implication.
334 | \( \not \Rightarrow \) | 216 | This form is negation transferable | |
\( \Downarrow \) | ||||
67 | ||||
\( \Downarrow \) | ||||
This form is transferable | 52 | |||
\( \Downarrow \) | ||||
287 |