In the four-pillar fortune-telling, there are no more than eight characters in one **, so it is also called the horoscope. After excluding the Japanese yen of the Japanese master, there are only seven.
But there are heavenly stems hidden in the earthly branches. The maximum number can be three, three times forty-two, plus the three heavenly stems, theoretically there can be up to fifteen.
However, it is impossible to have fifteen in reality, and there are four or five of the same type of printing in Tibetan stems, which is already a lot.
You can specifically look at the Cong pattern or the Fake Cong pattern. Generally, if there are many official seals, financial seals, and academic seals, the Cong pattern or Fake Cong pattern will rarely appear, especially the Cong pattern.
There are also six. People born in the year of Ding on the day of Gengwu on the day of Bingwu and Jiawu have six learning seals.