C121212123112323223313132322331323133313233313232233132313232121   >>    C12121212311232322331313232233132313331323331323223313231323212   <<    C121212123112323223313132322331323133313233313232233132313232123   >>      C121212123112323223313132322331323133313233313232233132313232122   >>