• biker_bob
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    100% logical, nice and easy when you see the pattern. Thanks.
    August 12, 2014, 8:08 pm
  • LeraDraco69
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    Neat pattern. Thanks. <3.
    August 13, 2014, 1:05 am
  • KJourneaux
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    Very nice! Thanks! ~:)
    August 14, 2014, 4:22 pm
  • iggie23
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    Very pretty. Thanks.
    February 23, 2015, 1:50 am
  • NiftyStrawberry
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    Easy to guess does not make it logical.
    February 5, 2016, 7:05 am
  • littlebitocd
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    I'm not sure if it's purely logical, but you don't have to guess anything if you assume symmetry.
    January 10, 2020, 4:58 am