nikk-nikkm1r90-w4s906.out-40a
Pattern nikk-nikkm1r90-w4s906 after 2^40 steps: the complete pattern.
nikk-nikkm1r90-w4s906.out-40b
Pattern nikk-nikkm1r90-w4s906 after 2^40 steps: intermediate scale, showing most of the pattern.
nikk-nikkm1r90-w4s906.out-40c
Pattern nikk-nikkm1r90-w4s906 after 2^40 steps: all four block-laying switch engines.