C111112111133131121133133313331333132313232233133313113313232212131   >>    C11111211113313112113313331333133313231323223313331311331323221213   <<    C111112111133131121133133313331333132313232233133313113313232212133   >>      C111112111133131121133133313331333132313232233133313113313232212132   >>