C11112331333132311331333133313331323132313331211111211111333131133133313232131   >>    C1111233133313231133133313331333132313231333121111121111133313113313331323213   <<    C11112331333132311331333133313331323132313331211111211111333131133133313232133   >>      C11112331333132311331333133313331323132313331211111211111333131133133313232132   >>