C121212123112323223313132322331323331323331322331323132313231312121   >>    C12121212311232322331313232233132333132333132233132313231323131212   <<    C121212123112323223313132322331323331323331322331323132313231312123   >>      C121212123112323223313132322331323331323331322331323132313231312122   >>