d1y1la_    d1y1lb_    d1y1lc_    d1y1ld_ 
d1y1la_           0.0        0.0        0.0        0.0 
d1y1lb_           0.0        0.0        0.0        0.0 
d1y1lc_           0.0        0.0        0.0        0.0 
d1y1ld_           0.0        0.0        0.0        0.0