C111123313331323113313331333133313331323132333133313311232312311   >>    C11112331333132311331333133313331333132313233313331331123231231   <<    C111123313331323113313331333133313331323132333133313311232312313   >>      C111123313331323113313331333133313331323132333133313311232312312   >>