#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef pair<ll,ll> P;
typedef vector<ll> VI;
typedef vector<VI> VVI;
#define REP(i,n) for(int i=0;i<(n);i++)
#define ALL(v) v.begin(),v.end()
constexpr ll MOD=998244353;
constexpr ll INF=1e18;

int main(){
    string s; cin >> s;
    int n=s.size();
    map<char,int> mp;
    REP(i,n){
        if(mp[s[i]]==0)
            mp[s[i]]=i+1;
        else
            mp[s[i]]=-1;
    }
    for(auto p:mp){
        if(p.second!=-1)
            cout << p.second << " " << p.first << endl;
    }
    return 0;
}