{$mode objfpc}
{$coperators on}
const
        fi='input.txt';
        fo='output.txt';
        maxn=205;
        dx:array[1..6] of longint=(-2,-2,0,2,2,0);
        dy:array[1..6] of longint=(-1,1,2,1,-1,-2);
procedure fileio;
begin
        assign(input,fi); reset(input);
        assign(output,fo); rewrite(output);
end;
type    data=record
                x,y:longint;
        end;
var     trace,d:array[-2..maxn,-2..maxn] of longint;
        q:array[0..maxn*maxn] of data;
        st:array[0..maxn*maxn] of longint;
        s,f:data;
        n:longint;
procedure enter;
begin
        readln(n);
        readln(s.x,s.y,f.x,f.y);
        inc(s.x); inc(s.y); inc(f.x); inc(f.y);
end;
procedure BFS;
var     l,r,i,j:longint;
        u,v:data;
begin
        fillchar(trace,sizeof(trace),255);
        for i:=1 to n do
         for j:=1 to n do
          trace[i][j]:=0;
        trace[s.x][s.y]:=-1;
        l:=1; r:=1; q[1]:=s;
        repeat
                u:=q[l]; inc(l);
                for i:=1 to 6 do begin
                        v.x:=u.x+dx[i]; v.y:=u.y+dy[i];
                        if trace[v.x][v.y]=0 then begin
                                d[v.x][v.y]:=d[u.x][u.y]+1;
                                trace[v.x][v.y]:=i;
                                inc(r);
                                q[r]:=v;
                        end;
                end;
        until l>r;
end;
procedure solve;
var     i,top:longint;
begin
        BFS;
        top:=0;
        if trace[f.x][f.y]=0 then writeln('Impossible') else begin
                while (f.x<>s.x) or (F.y<>s.y) do begin
                        inc(top);
                        st[top]:=trace[f.x][f.y];
                        f.x-=dx[st[top]];
                        f.y-=dy[st[top]];
                end;
                writeln(top);
                for i:=top downto 1 do
                 case st[i] of
                  1: write('UL ');
                  2: write('UR ');
                  3: write('R ');
                  4: write('LR ');
                  5: write('LL ');
                  6: write('L ');
                 end;
        end;
end;
begin
        //fileio;
        enter;
        solve;
end.