12verhouding

Could you clarify what "12verhouding" refers to? It is not a widely recognized English-language term, and in Dutch it could mean “twelve ratio” or refer to a specific concept in a particular field. To write an accurate, neutral wiki-style article under 300 words, I need to know the intended context. For example, is it related to mathematics, music, design, Dutch culture, or a specific project or organization? If you can provide a brief definition or the field, I can draft the article accordingly.