C131312213233313231313231323232132313231323211331323132321133132333132321123111   >>    C13131221323331323131323132323213231323132321133132313232113313233313232112311   <<    C131312213233313231313231323232132313231323211331323132321133132333132321123113   >>      C131312213233313231313231323232132313231323211331323132321133132333132321123112   >>