#include<bits/stdc++.h>
using namespace std;
int p[30];
int db[300];
int point[300];
vector<int> v;
vector<string> otg;
string tostring(int a)
{
    string res="";
    do
    {
        res=char(a%10+'0')+res;
        a/=10;
    }
    while(a);
    return res;
}
int main()
{
    freopen ("printing.in", "r", stdin);
    freopen ("printing.out", "w", stdout);
    int n;
    cin>>n;
    string s;
    cin>>s;
    int a,b,m,d,h;
    int br=0;
    cin>>a>>b>>m>>d>>h;
    for(int i=1;i<=27;i++)
    {
        cin>>p[i];
    }
    for(int i=0;i<s.size();i++)
    {
        if(!db[s[i]]){br++;v.push_back(s[i]);point[s[i]]=v.size()-1;}
        db[s[i]]++;

    }
    //int ans=p[br];
    cout<<br<<endl;
    for(int i=0;i<v.size();i++)
    {
        cout<<char(v[i])<<endl;
    }
    for(int i=0;i<s.size();i++)
    {
       otg.push_back("w 1");
       if(i!=s.size()-1&&point[s[i+1]]!=point[s[i]])otg.push_back("cd "+tostring(point[s[i+1]]+1));
    }
    cout<<otg.size()<<endl;
    for(int i=0;i<otg.size();i++)
    {
        cout<<otg[i]<<endl;
    }
}