#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;clr = 1;
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; clr = 0;
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; tclk = 1;
#10 clk = ~ clk;timing = 1;#10 clk = ~ clk;timing = 0;#10 clk = ~ clk;timing = 1;#10 clk = ~ clk;timing = 1;
#10 clk = ~ clk;timing = 0;#10 clk = ~ clk;timing = 1;#10 clk = ~ clk;timing = 1;#10 clk = ~ clk;timing = 0;
#10 clk = ~ clk;timing = 0;#10 clk = ~ clk;timing = 0;#10 clk = ~ clk;timing = 1;#10 clk = ~ clk;timing = 1;
#10 clk = ~ clk;timing = 0;#10 clk = ~ clk;timing = 1;#10 clk = ~ clk;timing = 0;#10 clk = ~ clk;timing = 1;

#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; timing = 0;
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; 
#10 clk = ~ clk;#10 clk = ~ clk;#10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk; #10 clk = ~ clk;