C11112331312111112111133133313331333132313233313331311331323211331311321   >>    C1111233131211111211113313331333133313231323331333131133132321133131132   <<    C11112331312111112111133133313331333132313233313331311331323211331311323   >>      C11112331312111112111133133313331333132313233313331311331323211331311322   >>