d1bgn_2    d1cc4a2    d1cc6a2    d1bkwa2 
d1bgn_2           0.0        0.0        0.0        0.0 
d1cc4a2           0.0        0.0        0.0        0.0 
d1cc6a2           0.0        0.0        0.0        0.0 
d1bkwa2           0.0        0.0        0.0        0.0