% ruby space.rb display public2.in 
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Earth         Kirk McCoy Spock 
Vulcan        
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Enterprise docking at Earth
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Earth         Kirk McCoy Spock 
  Enterprise   
Vulcan        
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McCoy boarding Enterprise at Earth
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Earth         Kirk Spock 
  Enterprise   McCoy 
Vulcan        
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Enterprise departing from Earth
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Earth         Kirk Spock 
Vulcan        
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Enterprise docking at Vulcan
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Earth         Kirk Spock 
Vulcan        
  Enterprise   McCoy 
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McCoy departing Enterprise at Vulcan
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Earth         Kirk Spock 
Vulcan        McCoy 
  Enterprise   
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Enterprise departing from Vulcan
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Earth         Kirk Spock 
Vulcan        McCoy 
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Enterprise docking at Earth
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Earth         Kirk Spock 
  Enterprise   
Vulcan        McCoy 
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Spock boarding Enterprise at Earth
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Earth         Kirk 
  Enterprise   Spock 
Vulcan        McCoy 
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Enterprise departing from Earth
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Earth         Kirk 
Vulcan        McCoy 
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Enterprise docking at Vulcan
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Earth         Kirk 
Vulcan        McCoy 
  Enterprise   Spock 
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Spock departing Enterprise at Vulcan
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Earth         Kirk 
Vulcan        McCoy Spock 
  Enterprise   
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Enterprise departing from Vulcan
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Earth         Kirk 
Vulcan        McCoy Spock 
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Enterprise docking at Earth
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Earth         Kirk 
  Enterprise   
Vulcan        McCoy Spock 
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Kirk boarding Enterprise at Earth
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Earth         
  Enterprise   Kirk 
Vulcan        McCoy Spock 
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Enterprise departing from Earth
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Earth         
Vulcan        McCoy Spock 
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Enterprise docking at Vulcan
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Earth         
Vulcan        McCoy Spock 
  Enterprise   Kirk 
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Kirk departing Enterprise at Vulcan
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Earth         
Vulcan        Kirk McCoy Spock 
  Enterprise   
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Enterprise departing from Vulcan
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Earth         
Vulcan        Kirk McCoy Spock 
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