d1vkfa_    d1vkfb_    d1vkfc_    d1vkfd_ 
d1vkfa_           0.0      192.9       52.7      184.0 
d1vkfb_         192.9        0.0      174.0      242.9 
d1vkfc_          52.7      174.0        0.0      152.7 
d1vkfd_         184.0      242.9      152.7        0.0