struct a b c end;

method m(flag)
  a:=b-1;
  if flag then
    b:=c-1;
    var a:=95;
    c:=a-1;
  else
    a:=a-10;
    var b:=a*2;
    b:=23;
    c:=b*2;
  end;
  b:=b-17;
  return this;
end;