C111123313331323113313331333133313331323132333133313331322331221   >>    C11112331333132311331333133313331333132313233313331333132233122   <<    C111123313331323113313331333133313331323132333133313331322331223   >>      C111123313331323113313331333133313331323132333133313331322331222   >>