#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define REP(i,a,b) for (ll i = a; i < b; i++)
int main() {
string alpha = "azertyuiopqsdfghjklmwxcvbn";
ll n = 1000;
ll q = 100000;
REP(i,0,n) {
cout << alpha[i%26] << alpha[(i+4)%26] << alpha[(i+1)%26] << alpha[(i+3)%26] << alpha[(i+5)%26] << alpha[(i+4)%26] << alpha[(i+4)%26] << alpha[i%26] << " ";
}
cout << endl;
cout << q << endl;
REP(i,0,q) {
cout << alpha[(i+5)%26] << alpha[(i+4)%26] << alpha[(i+4)%26] << alpha[i%26] << alpha[i%26] << alpha[(i+4)%26] << alpha[(i+1)%26] << alpha[(i+3)%26] << endl;
}
// REP(i,0,26) {
// cout << 'a'+i << endl;
// }
}