BTBU Bhutan/Bumthang
BTCH Bhutan/Chhukha
BTCR Bhutan/Chirang
BTDA Bhutan/Daga
BTGE Bhutan/Geylegphug
BTHA Bhutan/Ha
BTLU Bhutan/Lhuntshi
BTMO Bhutan/Mongar
BTPE Bhutan/Pemagatsel
BTPU Bhutan/Punakha
BTRI Bhutan/Rinpung
BTSA Bhutan/Samchi
BTSG Bhutan/Shemgang
BTSJ Bhutan/Samdrup Jongkhar
BTTA Bhutan/Tashigang
BTTO Bhutan/Tongsa
BTTP Bhutan/Timphu
BTWA Bhutan/Wangdiphodrang