C11112331333132311331333132313331333131133131133133313332233132332313232111   >>    C1111233133313231133133313231333133313113313113313331333223313233231323211   <<    C11112331333132311331333132313331333131133131133133313332233132332313232113   >>      C11112331333132311331333132313331333131133131133133313332233132332313232112   >>