d1bgn_1    d1cc4a1    d1cc6a1    d1bkwa1 
d1bgn_1           0.0        0.0        0.0        0.0 
d1cc4a1           0.0        0.0        0.0        0.0 
d1cc6a1           0.0        0.0        0.0        2.0 
d1bkwa1           0.0        0.0        2.0        0.0