C111123313331323113313331333133313331323131211113313331311331323221111   >>    C11112331333132311331333133313331333132313121111331333131133132322111   <<    C111123313331323113313331333133313331323131211113313331311331323221113   >>      C111123313331323113313331333133313331323131211113313331311331323221112   >>