#define _CRT_SECURE_NO_WARNINGS
//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
//#define int ll
//#define endl "\n"
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pii;
#define all(c) (c).begin(), (c).end()
#define loop(i,a,b) for(ll i=a; i<ll(b); i++)
#define rep(i,b) loop(i,0,b)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
template<class T> ostream & operator<<(ostream & os, vector<T> const &);
template<int n, class...T> typename enable_if<(n>=sizeof...(T))>::type _ot(ostream &, tuple<T...> const &){}
template<int n, class...T> typename enable_if<(n< sizeof...(T))>::type _ot(ostream & os, tuple<T...> const & t){ os << (n==0?"":" ") << get<n>(t); _ot<n+1>(os, t); }
template<class...T> ostream & operator<<(ostream & os, tuple<T...> const & t){ _ot<0>(os, t); return os; }
template<class T, class U> ostream & operator<<(ostream & os, pair<T,U> const & p){ return os << "(" << p.first << ", " << p.second << ") "; }
template<class T> ostream & operator<<(ostream & os, vector<T> const & v){ rep(i,v.size()) os << v[i] << (i+1==(int)v.size()?"":" "); return os; }
template<class T> inline bool chmax(T & x, T const & y){ return x<y ? x=y,true : false; }
template<class T> inline bool chmin(T & x, T const & y){ return x>y ? x=y,true : false; }
#ifdef DEBUG
#define dump(...) (cerr<<#__VA_ARGS__<<" = "<<mt(__VA_ARGS__)<<" ["<<__LINE__<<"]"<<endl)
#else
#define dump(...)
#endif
// ll const mod = 1000000007;
// ll const inf = 1LL<<60;

bool dp[6000][1<<13];

ll const B = 1000000007;

int solve(vector<string> & ss, string & t){
    int n = ss.size();
    int len = t.size();

    vector<ull> shash(n);
    rep(i,n){
        ull x = 0;
        rep(j,ss[i].size()){
            x = x*B + ss[i][j];
        }
        shash[i] = x;
    }
    vector<ull> pow(len+1), thash(len+1);
    pow[0] = 1;
    thash[0] = 0;
    rep(i,len){
        pow[i+1] = pow[i]*B;
        thash[i+1] = thash[i]*B + t[i];
    }

    rep(i,len+1)rep(j,1<<n) dp[i][j] = false;
    rep(i,len+1) dp[i][0] = true;
    rep(pos,len){
        rep(mask,1<<n){
            if(!dp[pos][mask]) continue;
            rep(i,n){
                if(mask>>i&1) continue;
                if(pos+ss[i].size() > t.size()) continue;
                ull h1 = shash[i];
                ull h2 = thash[pos+ss[i].size()] - thash[pos] * pow[ss[i].size()];
                // if(h1 != h2) continue;
                dp[pos+ss[i].size()][mask|1<<i] |= h1 == h2; // t.substr(pos,ss[i].size()) == ss[i];
            }
        }

        // dump(pos);
        // rep(i,1<<n){
        //     dump(bitset<3>(i),dp[pos][i]);
        // }
    }

    int ans = 0;
    rep(i,len+1){
        if(dp[i][(1<<n)-1]){
            ++ans;
        }
    }
    return ans;
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n,m;
    while(cin >> n >> m && n){
        vector<string> s(n);
        rep(i,n) cin >> s[i];
        string t;
        rep(i,m){
            string x;
            cin >> x;
            t += x;
        }
        cout << solve(s,t) << endl;
    }
}

Measured memory_bytes: 42264