('CID100019094', 4),Chlorhexadol [ban]
('CID100019094', 4),Chlorhexadol [BAN]
('CID100019094', 4),CHLORHEXADOL
('CID100019094', 4),Chlorhexadol
('CID102759076', 3),CHLORHEXADOL
('CID102759076', 3),CHLORHEXADOL
('CID102759076', 3),CHLORHEXADOL
ldiff: defaultdict(<type 'list'>, {'CID100019094': [6, 6, 0, 0], 'CID102759076': [0, 0, 0]})
f1: [6, 6, 0, 0]
f2: [0, 0, 0]
c1: Counter({0: 2, 6: 2})
c2: Counter({0: 3})
The chosen was  ... CID102759076