C111123313121111121111331333133313331323221211113313121133133313232233131   >>    C11112331312111112111133133313331333132322121111331312113313331323223313   <<    C111123313121111121111331333133313331323221211113313121133133313232233133   >>      C111123313121111121111331333133313331323221211113313121133133313232233132   >>