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entity call4 is end; architecture behav of call4 is procedure p (n : natural) is procedure p2 (m : natural) is begin for i in 1 to m loop report "hello 2"; wait for 1 ns; end loop; end p2; begin for i in 1 to n loop p2 (i); report "hello 1"; wait for 1 ns; end loop; end p; begin process begin p (5); report "SUCCESS"; wait; end process; end behav;