module multrow(part,x,ym,yo,cin,s,cout);
    /* A row of one-bit multiplies */
    input [2:0] part;
    input [3:0] x;
    input ym, yo;
    input [2:0] cin;
    output [2:0] s;
    output [2:0] cout;

   assign {cout[0],s[0]} = part[1] + (x[0] & ym) + cin[0];
   assign {cout[1],s[1]} = part[2] + (x[1] & ym) + cin[1];
   assign {cout[2],s[2]} = (x[3] & yo) + (x[2] & ym) + cin[2];
endmodule