C11112331333132311331333132313331333131133131133132313232212131   >>    C1111233133313231133133313231333133313113313113313231323221213   <<    C11112331333132311331333132313331333131133131133132313232212133   >>      C11112331333132311331333132313331333131133131133132313232212132   >>