The precedence of Thai royalty follows a system of ranks known as thanandon (), which are accompanied by royal titles. The Sovereign There are two styles which can be used for a king in ordinary speech, depending on whether he has been crowned: Crowned kings: Phra Bat Somdet Phra Chao Yu Hua (เจ้า; ) is the style used in ordinary speech when referring to the kings of Thailand after their coronation. This style may be used in two ways: Preceding the name of the king; e.g., Phra Bat Somdet Phra Chao Yu Hua Phumiphon Adunyadet (; His Majesty King Bhumibol Adulyadej). More formally it can be split across the name, possibly with the omission (or modification) of the words "Phra Chao Yu Hua"; e.g., Phra Bat Somdet Phra Paramintara Maha Phumiphon Adunyadet () and Phra Bat Somdet Phra Paramindara Maha Prajadhipok Phra Pokklao Chao Yu Hua (). Uncrowned kings: Somdet Phra Chao Yu Hua (), normally preceding the king's name, is restricted to a king who has not yet been crowned. When crowned, he assumes the title of Phra Bat Somdet Phra Chao Yu Hua; e.g., Somdet Phra Chao Yu Hua Maha Wachiralongkon Bodinthrathepphayawarangkun (; His Majesty King Maha Vajiralongkorn Bodindradebayavarangkun). Consorts Traditionally, titles of royal wives depended on their birth titles and royal favour; only princesses of high birth (Chao Fa, Phra Ong Chao and Mom Chao Ying) assuming titles higher than Chao Chom. There were no clear rules about the hierarchy of titles above Chao Chom until the time of King Mongkut, and titles changed over successive reigns. The rule about commoners also seems to be evolving, and it appears that there are no more restrictions on a commoner from becoming queen. Most of the titles below are from King Vajiravudh's 1924 enactment of the Succession Law. Princes and princesses Holders of these titles are still considered royal, since they are (at most) two generations removed from a king. Nai Luang (ในหลวง) is an epithet for a king. Children of a king are called Luk Luang (ลูก หลวง "royal children"), and grandchildren of a king are called Laan Luang (หลาน "royal grandchildren"). The concept is similar to the French system of "princes of the blood" and the Iberian system of "infantes." In English, they are normally called "prince" or "princess". Special forms are used when one wishes to address them, although the language is less elaborate than when