#include<bits/stdc++.h>
#define ll long long int
#define vec vector<ll>
#define f(var,a,b) for(ll var = a ; var < b ; var++ )
#define fr(var,a,b) for(ll var = a ; var > b ; var-- )
#define fasthoja ios_base::sync_with_stdio(false); cin.tie(NULL);
 
using namespace std;
 
void solve( vector<string> vs ) {
    ll n = vs.size();
 
    string mns = "";
 
    ll mnl = INT_MAX;
    f(i,0,n) {
        if( vs[i].length() < mnl ) {
            mnl = vs[i].length();
            mns = vs[i];
        }
    }
 
    cout << mns << " ";
    f(i,0,n) {
        cout << vs[i] << " " << mns << " ";
    }
    cout << "\n";
}
 
int main(void){
 
    	fasthoja; 
        vector<string> vs;
        string tmp;
        while( cin >> tmp ) {
            vs.push_back(tmp);
        }
        solve(vs);
 
    	return 0;
}

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