#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    ifstream cin("printing.in");
    ofstream cout("printing.out");

    int n;
    cin >> n;

    string s;
    cin >> s;

    int x;
    cin >> x >> x >> x >> x >> x;
    for(int i = 0;i<27;i++) cin >> x;

    cout << "27" << '\n';
    for(char c = 'a';c<='z';c++)
        cout << c << '\n';
    cout << "_" << '\n';

    cout << 2*s.size() << '\n';
    for(char c: s)
    {
        int seq;
        if(c=='_') seq = 27;
        else seq = (c-'a') + 1;

        cout << "cd " << seq << '\n';
        cout << "w 1" << '\n';
    }
}