C11112331333132311331333133313331333132312323133313231313311221   >>    C1111233133313231133133313331333133313231232313331323131331122   <<    C11112331333132311331333133313331333132312323133313231313311223   >>      C11112331333132311331333133313331333132312323133313231313311222   >>