C11112331333132311331333133313331333132312323133313113313231212311   >>    C1111233133313231133133313331333133313231232313331311331323121231   <<    C11112331333132311331333133313331333132312323133313113313231212313   >>      C11112331333132311331333133313331333132312323133313113313231212312   >>