#include<bits/stdc++.h>
using namespace std;
string s[20005];
int cnt;
int int_size(int x){return x < 10 ? 1 : int_size(x / 10) + 1;}
void print(int x, int y)
{
    if(x == y) return;
    printf(" ");
    print(x + 1, y);
}
int main()
{
    while(getline(cin, s[++cnt]));
    cnt--;
    int len = int_size(cnt);
    for(int i = 1; i < cnt; i++)
    {
        print(int_size(i), len);
        cout << i << " " << s[i] << endl;
    }

    return 0;
}