#include <bits/stdc++.h>
using namespace std;
string s, mau="hello";
int i, j=0;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> s;
for (i=0; s[i]; i++){
if (s[i]==mau[j]){
cout << s[i] << " " << i << " " << j << endl;
j++;
if (j==5) break;
}
}
if (j==5) cout << "YES";
else cout << "NO";
return 0;
}
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