#include <bits/stdc++.h>
using namespace std;
using ll = long long;

template<class T> istream& operator >> (istream& is, vector<T>& vec) {
    for(T& x : vec) is >> x;
    return is;
}

template<class T> ostream& operator << (ostream& os, const vector<T>& vec) {
    if(vec.empty()) return os;
    os << vec[0];
    for(auto it = vec.begin(); ++it != vec.end(); ) os << ' ' << *it;
    return os;
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, l, q;
    cin >> n >> l >> q;
    vector<string> s(n);
    for(auto &&ss : s) cin >> ss;
    sort(s.begin(), s.end());
    vector<int> ord(n);
    vector<bool> used(n);
    iota(ord.begin(), ord.end(), 0);

    auto fr = [&](string &t){
        int m = t.size();
        int ok = -1, ng = n, mid;
        while(ok + 1 < ng){
            mid = (ok + ng) / 2;
            (t >= s[ord[mid]].substr(0, m) ? ok : ng) = mid;
        }
        return ok;
    };
    auto fl = [&](string &t){
        int m = t.size();
        int ok = -1, ng = n, mid;
        while(ok + 1 < ng){
            mid = (ok + ng) / 2;
            (t > s[ord[mid]].substr(0, m) ? ok : ng) = mid;
        }
        return ok;
    };

    while(q--){
        int cmd;
        cin >> cmd;
        if(cmd == 1){
            int k;
            char c1, c2;
            cin >> k >> c1 >> c2;
            k--;
            for(int i = 0; i < n; i++){
                if(s[i][k] == c1){
                    s[i][k] = c2;
                    used[i] = true;
                }else used[i] = false;
            }
            stable_sort(ord.begin(), ord.end(), [&](int lhs, int rhs){
                if(used[lhs] ^ used[rhs]) return s[lhs] < s[rhs];
                return false;
            });
        }else{
            string t;
            cin >> t;
            cout << fr(t) - fl(t) << '\n';
        }
    }
}