What mixture of genres should I write a story with?

A horror mystery

A horror romance

A romance mystery

A horror fantasy

A fantasy mystery

A romance fantasy

A romantic realistic-fiction

A romantic sci-fi

A horror sci-fi

A realistic-fiction mystery

A horror historical-fiction

A romantic historical-fiction

A historical-fiction mystery

Other (Please comment; story genres are: mystery, romance, realistic-fiction, sci-fi, horror, historical-fiction, and fantasy.)