('CID100004870', 4),polythiazide
('CID100004870', 4),Polythiazide
('CID100004870', 4),Polythiazide (JAN/USAN/INN)
('CID100004870', 4),Polythiazide [USAN:INN:BAN:JAN]
('CID100134687', 4),polythiazide
('CID100134687', 4),Polythiazide mixture with Prazosin
('CID100134687', 4),Polythiazide mixture with Prazosin hydrochloride
('CID100134687', 4),Prazosin hydrochloride and polythiazide
ldiff: defaultdict(<type 'list'>, {'CID100004870': [0, 0, 15, 19], 'CID100134687': [0, 22, 36, 27]})
f1: [0, 0, 15, 19]
f2: [0, 22, 36, 27]
c1: Counter({0: 2, 19: 1, 15: 1})
c2: Counter({0: 1, 27: 1, 36: 1, 22: 1})
The chosen was ... CID100004870