Postal codes of the form 'DDDD LL' with optional 'NL-' prefix. 'F', 'I', 'O', 'Q', 'U' and 'Y' are not used, 'SA', 'SD' and 'SS' are unused combinations, and the first digit cannot be 0.
| Text | Result |
|---|---|
1000ab
| match |
2378 SC
| match |
9438AE
| match |
| 0000 aa | no match |
| 2378SS | no match |