('CID100010188', 3),Dichloralphenazone
('CID100010188', 3),Dichloralphenazone [BAN]
('CID100010188', 3),Dichloralphenazone (USP)
('CID144152261', 2),Acetaminophen mixture with dichloralphenazone and isometheptine mucate
('CID144152261', 2),Dichloralphenazone
ldiff: defaultdict(<type 'list'>, {'CID100010188': [0, 6, 6], 'CID144152261': [52, 0]})
f1: [0, 6, 6]
f2: [52, 0]
c1: Counter({6: 2, 0: 1})
c2: Counter({0: 1, 52: 1})
The chosen was ... CID100010188