C1111233131211111211113313331333133313331122212111112111113232113313232231211   >>    C111123313121111121111331333133313331333112221211111211111323211331323223121   <<    C1111233131211111211113313331333133313331122212111112111113232113313232231213   >>      C1111233131211111211113313331333133313331122212111112111113232113313232231212   >>