C111123313331323113313331323133313331311331311331333133322331123312311   >>    C11112331333132311331333132313331333131133131133133313332233112331231   <<    C111123313331323113313331323133313331311331311331333133322331123312313   >>      C111123313331323113313331323133313331311331311331333133322331123312312   >>