C11112331333132311331333133313231333131133131211113313331121111   >>    C1111233133313231133133313331323133313113313121111331333112111   <<    C11112331333132311331333133313231333131133131211113313331121113   >>      C11112331333132311331333133313231333131133131211113313331121112   >>