Fiber(Dense{Int64}(SparseList{Int64, Int64}(Element{0.0, Float64}([2.0, 3.0, 4.0, 5.0, 6.0, 1.0, 1.0, 1.0, 7.0]), 10, [1, 6, 9, 9, 10], [1, 3, 5, 7, 9, 3, 5, 8, 3]), 4))
Fiber(Dense{Int64}(Element{0.0, Float64}([1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]), 10))
2, 0, 11, 0, 

