Remark: How does the checker deal with this problem,
Bei den Ziffern wird eine vorangestellte 0 ignoriert (z.B. gilt "06 EU-Städte" auch für "6")
When the digits are preceded by a 0 this can be ignored (eg "06 EU Cities" is true for "6")
In my opinion this is not the case with the checker but if 0 is ignored then the digit will not be found for the figure 0