C111123313331323113313331333133313331323132333133313331322331323132212321   >>    C11112331333132311331333133313331333132313233313331333132233132313221232   <<    C111123313331323113313331333133313331323132333133313331322331323132212323   >>      C111123313331323113313331333133313331323132333133313331322331323132212322   >>