var n,m,x,y,t,i:longint;
    o,d:text;
    da:boolean;
begin
assign(d,'chatnoir.in');assign(o,'chatnoir.out');
reset(d);rewrite(o);
readln(d,t);
for i:=1 to t do
  begin
    da:=false;
    read(d,n);read(d,m);read(d,x);read(d,y);
    if (x>n-3)or(x<4)or(y>m-3)or(y<4) then da:=true;
    if da then writeln(o,'DA') else writeln(o,'NU');
  end;
close(o);close(d);
end.