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1.8.7 :001 > require 'set'
=> true
1.8.7 :002 > Set.new(Set.new(Set.new(Set.new([22,8140])))).inspect
=> "#<Set: {22, 8140}>"
1.8.7 :003 > Set.new(Set.new(Set.new([22,8140]))).inspect
=> "#<Set: {8140, 22}>"
1.8.7 :004 > Set.new(Set.new([22,8140])).inspect
=> "#<Set: {22, 8140}>"
1.8.7 :005 > Set.new([22,8140]).inspect
=> "#<Set: {8140, 22}>"
1.8.7 :006 >
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