foreach (keys %clock_sheet)
        {
          $clk_name = $_;
          print "$clock_sheet{$clk_name}\n";
         } 
        print "$clock_sheet{$clk_name}_name\n";

##</code><code>##

@clk_array = %clock_sheet;
print"@clk_array\_name\n";

##</code><code>##

clk1 clk1 clk2 clk2 ....... clk4 clk4_name