module oh_nand3 #(parameter DW = 1 ) // array width
   (
    input [DW-1:0]  a,
    input [DW-1:0]  b,
    input [DW-1:0]  c, 
    output [DW-1:0] z
    );
   
   assign z = ~(a & b & c);
   
endmodule