austria: germany czech slovakia hungary slovenia italy
belgium: netherlands germany luxembourg france
bulgaria: romania greece
croatia: slovenia hungary
czech: germany poland slovakia
denmark: germany sweden
estonia: latvia
estonia: finland
finland: sweden
france: luxembourg germany italy spain uk
germany: poland luxembourg netherlands
greece: italy
hungary: slovakia romania slovenia
ireland: uk
italy: malta
italy: slovenia
latvia: lithuania
lithuania: poland
poland: slovakia
portugal: spain
sweden: