C121212123112323223313132322331323331323331322331323132323221231   >>    C12121212311232322331313232233132333132333132233132313232322123   <<    C121212123112323223313132322331323331323331322331323132323221233   >>      C121212123112323223313132322331323331323331322331323132323221232   >>