C11112331333132311331333131333133313231331121111331323133313113233311   >>    C1111233133313231133133313133313331323133112111133132313331311323331   <<    C11112331333132311331333131333133313231331121111331323133313113233313   >>      C11112331333132311331333131333133313231331121111331323133313113233312   >>