C1111233131211111211113313331333133313331333133313331333133313223213231   >>    C111123313121111121111331333133313331333133313331333133313331322321323   <<    C1111233131211111211113313331333133313331333133313331333133313223213233   >>      C1111233131211111211113313331333133313331333133313331333133313223213232   >>