on the new banknotes ECB will be in 9 languages
It's a bit of a strange order.
They took the "official" list of the EU languages, which is ordered by the name of the languages in each language itself, but the Bulgarian version should then be the first one. My idea is that they probably ordered it by the English word "Cyrillic"
ЕЦБ = Bâlgarski
BCE = Castellano, Français, Gaeilge, Italiano, Português, Română
ECB = Česky, Dansk, English, Latviešu, Lietuvių, Nederlands, Slovenčina, Slovenščina, Svenska
EZB = Deutsch
EKP = Eesti, Suomi
ΕΚΤ = Elliniká
EKB = Magyar
BĊE = Malti
EBC = Polski