C111123313331323113313331333133313331323132333133313331333131133132322121   >>    C11112331333132311331333133313331333132313233313331333133313113313232212   <<    C111123313331323113313331333133313331323132333133313331333131133132322123   >>      C111123313331323113313331333133313331323132333133313331333131133132322122   >>