C11112331333132311331333133313331333132312323133313113313123231322331322121   >>    C1111233133313231133133313331333133313231232313331311331312323132233132212   <<    C11112331333132311331333133313331333132312323133313113313123231322331322123   >>      C11112331333132311331333133313331333132312323133313113313123231322331322122   >>