I have an awkward sentence. But let's assume it has to be phrased the way it is. The rest of the paragraph will be filled with numbers that I write out numerically. Here is the awkward sentence(s): "According to Chinese astrology, it comes every 12 years. Starting in 1976, I’ve gone through 3 twelve-year cycles already." The problem I'm having is "3 twelve-year cycles". I want to write "twelve" numerically, but I hate the way "3 12-year cycles" look. It's confusing. But I don't like to mix spelling and writing out numbers in the same text. Any suggestions?