import pandas as pd

df = pd.DataFrame({
    'names': ['A','B','C','D','E','F','G','H','I','J','K','L'],
    'col1': [0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0],
    'col2': [0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0]})

names   col1    col2
A   0   0
B   1   0
C   0   0
D   1   0
E   1   1
F   1   0
G   0   1
H   0   0
I   0   1
J   1   0
K   0   0
L   0   0

names   col1    col2
A   1   0
B   1   0
C   1   0
D   1   0
E   1   1
F   1   1
G   0   1
H   0   1
I   0   1
J   1   0
K   1   0
L   1   0