Can you correct my mistake please!!!!!!


var m               : Array[-10..20,-10..20] of 0..1;
    i,j,k,n,a,b     : INTEGER;
    Flag            : Boolean;
    e               : array[1..100] of record x,y : integer; end;
procedure work;
var z,l,index,beg,en : integer;
begin
index := 1; beg := 1; en := 1;
e[1].x:=a; e[1].y:=b;
m[a,b]:=0;
for j:=1 to n do
  begin
  for i:=beg to en do
     begin
     if m[e[i].x,e[i].y+1] = 1 then
        begin
        m[e[i].x,e[i].y+1] := 0;
        inc(index);
        e[index]:=e[i];
        inc(e[index].y);
        write('R');
        end;
     if m[e[i].x+1,e[i].y] = 1 then
        begin
        m[e[i].x+1,e[i].y] := 0;
        inc(index);
        e[index]:=e[i];
        inc(e[index].x);
        write('B');
        end;
     if m[e[i].x,e[i].y-1] = 1 then
        begin
        m[e[i].x,e[i].y-1] := 0;
        inc(index);
        e[index]:=e[i];
        dec(e[index].y);
        write('L');
        end;
     if m[e[i].x-1,e[i].y] = 1 then
        begin
        m[e[i].x-1,e[i].y] := 0;
        inc(index);
        e[index]:=e[i];
        dec(e[index].x);
        write('T');
        end;
     if i <> index then writeln(',') else writeln('.');
     end;
   beg := en + 1; en := index;
   end;
end;
begin
readln(n); for i:= 1 to n do begin readln(j,k); m[10-k+1,j]:=1; end;

{ Tursene na nai dolen lqv element }
Flag := False;
for i := 1 to 10 do
 if Flag then break else
  for j:= 10 downto 1 do
    if m[j,i] = 1 then begin Flag := True; a:=j; b:=i; Break end;
{ ... }

work;
end.