thailand is headed by who, and what are their titles
Somdet Phra Chao Yu Hua ("Uncrowned King")
It can be split across the name, possibly with omission or modification of the words "Phra Chao Yu Hua".
Phrabat Somdech Phra Paramindara Maha Bhumibol Adulyadej
Phrabat Somdech Phra Paramindara Maha Prajadhipok Phra Pokklao Chaoyuhua.