d1ffvb2    d1ffve2    d1ffub2    d1ffue2 
d1ffvb2           0.0        0.0        0.0        0.0 
d1ffve2           0.0        0.0        0.0        0.0 
d1ffub2           0.0        0.0        0.0        0.0 
d1ffue2           0.0        0.0        0.0        0.0