C111123313331323113313331333133313331323132333133313331311221123133111   >>    C11112331333132311331333133313331333132313233313331333131122112313311   <<    C111123313331323113313331333133313331323132333133313331311221123133113   >>      C111123313331323113313331333133313331323132333133313331311221123133112   >>