('CID100008784', 9),alpha Heparin
('CID100008784', 9),alpha-Heparin
('CID100008784', 9),heparin
('CID100008784', 9),HEPARIN
('CID100008784', 9),Heparinic Acid
('CID100008784', 9),Heparin Sodium
('CID100008784', 9),Heparin, Sodium
('CID100008784', 9),Heparin, Unfractionated
('CID100008784', 9),Unfractionated Heparin
('CID122833565', 8),Heparinic acid
('CID122833565', 8),Heparin sodium
('CID122833565', 8),Heparin sulfate
('CID122833565', 8),Sodium heparin
('CID122833565', 8),Sodium Heparin
('CID122833565', 8),alpha-Heparin
('CID122833565', 8),heparin
('CID122833565', 8),Heparinate
ldiff: defaultdict(<type 'list'>, {'CID100008784': [6, 6, 0, 0, 7, 7, 8, 16, 15], 'CID122833565': [7, 7, 8, 7, 7, 6, 0, 3]})
f1: [6, 6, 0, 0, 7, 7, 8, 16, 15]
f2: [7, 7, 8, 7, 7, 6, 0, 3]
c1: Counter({0: 2, 6: 2, 7: 2, 8: 1, 15: 1, 16: 1})
c2: Counter({7: 4, 8: 1, 0: 1, 3: 1, 6: 1})
The chosen was  ... CID122833565