C111123313331323113313331333133313331323132333133313331322133313233321   >>    C11112331333132311331333133313331333132313233313331333132213331323332   <<    C111123313331323113313331333133313331323132333133313331322133313233323   >>      C111123313331323113313331333133313331323132333133313331322133313233322   >>