d1skqa1    d1skqb1    d1jnya1    d1jnyb1 
d1skqa1           0.0        0.0        0.0        4.0 
d1skqb1           0.0        0.0        4.0        0.0 
d1jnya1           0.0        4.0        0.0        0.0 
d1jnyb1           4.0        0.0        0.0        0.0