C111123313331323113313331333133313331323132333133313311232322222311   >>    C11112331333132311331333133313331333132313233313331331123232222231   <<    C111123313331323113313331333133313331323132333133313311232322222313   >>      C111123313331323113313331333133313331323132333133313311232322222312   >>