C1111233131211111211113313331333133313231323331322133313223311211   >>    C111123313121111121111331333133313331323132333132213331322331121   <<    C1111233131211111211113313331333133313231323331322133313223311213   >>      C1111233131211111211113313331333133313231323331322133313223311212   >>