plz help......Seqence recognizer error

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`timescale 1ns/ 1ps

module tb_seqrec;
  reg rnRESET, rCLK, rX; 
  wire  wZ;
                           
 seqrec seqrec0(.nRESET(rnRESET), .CLK(rCLK), .X(rX), .Z(wZ));
always
 begin
  # 500 rCLK <= ~rCLK;
 end
 
 initial
 begin
   rnRESET <= 1'b0;
   rX <= 1'b0;
19#100 rnRESET <= 1'bl;
20#1000 rX <= 1'bl;
21#1000 rX <= 1'bl;
22#1000 rX <= 1'b0;
23#1000 rX <= 1'b0;
24#1000 rX <= 1'bl;
25#1000 rX <= 1'bl;
26#1000 rX <= 1'b0;
27#1000 rX <= 1'bl; // Z=1
28#1000 rX <= 1'bl;
29#1000 rX <= 1'b0;
30#1000 rX <= 1'bl; // Z=1
31#1000 rX <= 1'b0;
32#1000 rX <= 1'bl;
end
endmodule

I made it. l thought there is no error.

but

:/Test/seqrec2/tb_seqrec.v(19): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(19): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(20): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(20): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(21): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(21): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(24): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(24): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(25): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(25): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(27): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(27): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(28): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(28): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(30): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(30): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

** Error: C:/Test/seqrec2/tb_seqrec.v(32): Expecting numeric digits.

** Error: C:/Test/seqrec2/tb_seqrec.v(32): near "1": syntax error, unexpected "IDENTIFIER", expecting ';'

what's wrong?

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The text flagged in red is extraneous junk that does not belong there. What are you trying to do?