! Period 40 puffer.
! This shows a puffer engine found by Hartmut Holzwart in September 1993.
! In the original pattern, the engine was driven by a large period 4
! spaceship that he found.  In this version by David Bell, the engine is
! driven by period 2 spaceship components.  This is the first known
! orthogonal puffer that does not make use of any "standard" spaceships.
! This creates a pond, beehive, and block every 40 generations.
! David I. Bell, 29 Sep 1993
! "main" (cells 185 length 43 width 38 generation 7)
21k2h@!
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