CMOS circuits- NOR gate using Cmos

NOR SWITCH USING CMOS
module switchnor(out,a,b);
output out;
input a,b;
supply1 pwr;
supply0 gnd;
wire w1;
pmos (w1,a,pwr);
pmos (out,b,w1);
nmos (out,a,gnd);
nmos (out,b,gnd);
endmodule