! Glider emulator
! Gabriel Nivasch
! P4 tagalong for two big gliders, discovered in January 1999.
! https://www.conwaylife.com/patterns/longcanadagoose.cells
! https://www.conwaylife.com/wiki/Glider_emulator
! https://www.conwaylife.com/patterns/glideremulator.cells
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