program change2;
const
gl = ['a','e','i','o','u','y','A','E','I','O','U','Y'];
var
s,st2,stmax:string;
i:integer;
max,count:real;
begin
max:= 0;
readln(s);
s:= s + ' ';
for i:= 1 to length(s) do begin
if (s[i] <> ' ') then begin
st2:= st2 + s[i];
if s[i] in gl then
count:=count+1;
end
else
if count/length(st2) > max then begin
max:= count/length(st2);
stmax:= st2;
st2:= '';
count:= 0;
end;
end;
writeln(stmax);
end.