C111123313331323113313331333133313331323131211113313331311331323222232131331   >>    C11112331333132311331333133313331333132313121111331333131133132322223213133   <<    C111123313331323113313331333133313331323131211113313331311331323222232131333   >>      C111123313331323113313331333133313331323131211113313331311331323222232131332   >>