A, B (wood), B (fire), B (earth), B (gold), B (water). Twelve words in all.
The human element contained in the earthly branch (that is, the ten words containing heavenly stems respectively) contains single (decyl) water; Ugly (penehyclidine); Yin (methyl propane); Medium (b) wood; Chen Zhong (penehyclidine); Suizhong (C & AMPE); Afternoon (D); Not (Ding Yi); (Geng Wu); (Xin) Jinhao 6 1 Zaihai (Home). Only the five elements and the characters in the eight characters that heavenly stems and earthly branches didn't have are the missing five elements. Most people's eight characters and five elements are relatively complete, so they usually read them.
The eight characters mainly look at the prosperity and weakness, and the prosperity and weakness of the sun column and the heavenly stem (representing the Lord himself). Then carry out life support or restraint. It's not necessarily something missing. For example, the main "water" is prosperous, born in Haizi ugly moon. However, if the constellation lacks "gold", it can't be replenished, because gold is raw water, and it will be more prosperous if it is replenished. Only "earth" can be used to control water, or wood and fire can be used to vent the exuberance of water.