d1np1a_    d1np1b_    d2np1a_    d2np1b_    d3np1a_    d3np1b_    d4np1a_    d4np1b_ 
d1np1a_           0.0       22.0       20.0       42.0        0.0       44.0        4.0       86.0 
d1np1b_          22.0        0.0       56.0       46.0       26.0       68.0       24.0      102.0 
d2np1a_          20.0       56.0        0.0        4.0       28.0       16.0        0.0      120.0 
d2np1b_          42.0       46.0        4.0        0.0       34.0        2.0        8.0      122.0 
d3np1a_           0.0       26.0       28.0       34.0        0.0       52.0        0.0       66.0 
d3np1b_          44.0       68.0       16.0        2.0       52.0        0.0       30.0      124.0 
d4np1a_           4.0       24.0        0.0        8.0        0.0       30.0        0.0       82.0 
d4np1b_          86.0      102.0      120.0      122.0       66.0      124.0       82.0        0.0