('CID100164521', 8),Bepotastine benzenesulfonate
('CID100164521', 8),Bepotastine besilate
('CID100164521', 8),Bepotastine besilate (JAN)
('CID100164521', 8),Bepotastine Beslilat
('CID100164521', 8),Bepotastine Beslilate
('CID100164521', 8),Bepotastine besylate
('CID100164521', 8),Bepotastine besylate (USAN)
('CID100164521', 8),Bepotastine besilate (JAN)
('CID100002350', 6),Bepotastine
('CID100002350', 6),Bepotastine
('CID100002350', 6),Bepotastine besilate
('CID100002350', 6),Bepotastine (USAN/INN)
('CID100002350', 6),Bepotastine
('CID100002350', 6),Bepotastine [INN]
ldiff: defaultdict(<type 'list'>, {'CID100164521': [17, 9, 15, 9, 10, 9, 16, 15], 'CID100002350': [0, 0, 9, 11, 0, 6]})
f1: [17, 9, 15, 9, 10, 9, 16, 15]
f2: [0, 0, 9, 11, 0, 6]
c1: Counter({9: 3, 15: 2, 16: 1, 17: 1, 10: 1})
c2: Counter({0: 3, 9: 1, 11: 1, 6: 1})
The chosen was  ... CID100002350