C121212123112323223313132322331323133313232211331323132333132313221121   >>    C12121212311232322331313232233132313331323221133132313233313231322112   <<    C121212123112323223313132322331323133313232211331323132333132313221123   >>      C121212123112323223313132322331323133313232211331323132333132313221122   >>