C111123313121111121111331333133313331323132333132313232212312121   >>    C11112331312111112111133133313331333132313233313231323221231212   <<    C111123313121111121111331333133313331323132333132313232212312123   >>      C111123313121111121111331333133313331323132333132313232212312122   >>