C11112331333132311331333133313331333132312323133313331312311221   >>    C1111233133313231133133313331333133313231232313331333131231122   <<    C11112331333132311331333133313331333132312323133313331312311223   >>      C11112331333132311331333133313331333132312323133313331312311222   >>