((0,0,0,0,0),(0,0,0,0,0),(0,0,0,0,0))
((1,0,0,0,0),(0,2,0,0,0),(0,0,3,0,999))
((1,2,3),(4,5,6),(7,8,9))
nil
(0.000000,0.000000,0.000000)
