#include <bits/stdc++.h>

using namespace std;

int n, a, b, c, d, h, m;

string s;

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	freopen("printing.in", "r", stdin);
	freopen("printing.out", "w", stdout);
	
	cin >> n;
	cin >> s;
	
	cin >> a >> b >> m >> d >> h;
	
	for(int i = 0; i < 27; i++)cin >> c;
	
	cout << "27\n"; 
	for(int i = 0; i < 26; i++)cout << char('a' + i) << endl;
	cout << "_" << endl;
	cout << 2 * s.size() << endl;
	for(int i = 0; i < s.size(); i++)
	{
		if(s[i] == '_')
		{
			cout << "cd 27\n";
			cout << "w 1\n";
		}
		else
		{
			cout << "cd " << int(s[i] - 'a' + 1) << endl;
			cout << "w 1\n";
		}
		
	}
	
	return 0;
}