Program PascalGuru;
label 1;
var
i: integer;
s, sub: string;
sc: integer;
{ -------------------------------------- }
begin
write('Vvedite stroku:');
readln(s);
sc := 0;
1:
for i := length(s) downto 1 do
if (s[i] = ' ') then
begin
inc(sc);
if sc > 3 then
begin
sc := 1;
writeln;
end;
sub := copy(s, i + 1, length(s) - i);
write(sub, ' ');
delete(s, i, length(s) - i + 1);
goto 1;
end;
{ ************* }
sub := s;
writeln(sub);
readln;
end.