('CID100062816', 6),Colestipol
('CID100062816', 6),COLESTIPOL
('CID100062816', 6),Colestipol HCl
('CID100062816', 6),Colestipol hydrochloride
('CID100062816', 6),HCl, Colestipol
('CID100062816', 6),Hydrochloride, Colestipol
('CID100008197', 5),COLESTIPOL HYDROCHLORIDE
('CID100008197', 5),Colestipol hydrochloride [USAN]
('CID100008197', 5),Colestipol HCl
('CID100008197', 5),Colestipol hydrochloride
('CID100008197', 5),Colestipol hydrochloride [USAN]
ldiff: defaultdict(<type 'list'>, {'CID100008197': [14, 21, 4, 14, 21], 'CID100062816': [0, 0, 4, 14, 5, 15]})
f1: [0, 0, 4, 14, 5, 15]
f2: [14, 21, 4, 14, 21]
c1: Counter({0: 2, 4: 1, 5: 1, 14: 1, 15: 1})
c2: Counter({21: 2, 14: 2, 4: 1})
The chosen was ... CID100062816