C111123313331323113313331333133313331323131211113313113313133311111   >>    C11112331333132311331333133313331333132313121111331311331313331111   <<    C111123313331323113313331333133313331323131211113313113313133311113   >>      C111123313331323113313331333133313331323131211113313113313133311112   >>