import re
strs = [
'Bank Asya 1. Lig 2004/2005',
'Bank Asya 1. Lig 2006/2007',
'Bank Asya 1. Lig 2008',
'Bank Asya 1. Lig 2009',
'PTT 1. Lig 2012/2013',
'PTT 1. Lig 2014',
'PTT 1. Lig 2015'
]
print('\n'.join([re.sub('\s*\d{4}(/\d{4})?$', '', s) for s in strs]))
aW1wb3J0IHJlCgpzdHJzID0gWwogICdCYW5rIEFzeWEgMS4gTGlnIDIwMDQvMjAwNScsCiAgJ0JhbmsgQXN5YSAxLiBMaWcgMjAwNi8yMDA3JywgCiAgJ0JhbmsgQXN5YSAxLiBMaWcgMjAwOCcsCiAgJ0JhbmsgQXN5YSAxLiBMaWcgMjAwOScsCiAgJ1BUVCAxLiBMaWcgMjAxMi8yMDEzJywKICAnUFRUIDEuIExpZyAyMDE0JywKICAnUFRUIDEuIExpZyAyMDE1JwpdCgpwcmludCgnXG4nLmpvaW4oW3JlLnN1YignXHMqXGR7NH0oL1xkezR9KT8kJywgJycsIHMpIGZvciBzIGluIHN0cnNdKSk=