d1n8pa_    d1n8pb_    d1n8pc_    d1n8pd_ 
d1n8pa_           0.0        0.0        0.0        2.0 
d1n8pb_           0.0        0.0        0.0        0.0 
d1n8pc_           0.0        0.0        0.0        0.0 
d1n8pd_           2.0        0.0        0.0        0.0